[flang-commits] [flang] d11e406 - [flang] Make real type of kind 10 target dependent

Peixin Qiao via flang-commits flang-commits at lists.llvm.org
Sat Oct 1 19:31:35 PDT 2022


Author: Peixin Qiao
Date: 2022-10-02T10:30:49+08:00
New Revision: d11e406e369fc90be5e2e2a0798ea7b7d2625882

URL: https://github.com/llvm/llvm-project/commit/d11e406e369fc90be5e2e2a0798ea7b7d2625882
DIFF: https://github.com/llvm/llvm-project/commit/d11e406e369fc90be5e2e2a0798ea7b7d2625882.diff

LOG: [flang] Make real type of kind 10 target dependent

The real(10) is supported on x86_64. On aarch64, the value of
selected_real_kind(16) should be 16 rather than 10 since real(10)
is not supported on x86_64. Previously, the real type support check
is not target dependent. Support it now through the target triple
information.

Reviewed By: clementval

Differential Revision: https://reviews.llvm.org/D134021

Added: 
    flang/test/Semantics/real10-x86-01.f90
    flang/test/Semantics/real10-x86-02.f90
    flang/test/Semantics/realkinds-aarch64-01.f90

Modified: 
    flang/lib/Evaluate/target.cpp
    flang/lib/Frontend/CompilerInvocation.cpp
    flang/module/__fortran_ieee_exceptions.f90
    flang/module/ieee_arithmetic.f90
    flang/test/Evaluate/folding07.f90
    flang/test/Semantics/kinds03.f90
    flang/test/Semantics/modfile26.f90
    flang/tools/bbc/bbc.cpp

Removed: 
    


################################################################################
diff  --git a/flang/lib/Evaluate/target.cpp b/flang/lib/Evaluate/target.cpp
index 691487875179c..b678f283c55ef 100644
--- a/flang/lib/Evaluate/target.cpp
+++ b/flang/lib/Evaluate/target.cpp
@@ -16,7 +16,6 @@ namespace Fortran::evaluate {
 Rounding TargetCharacteristics::defaultRounding;
 
 TargetCharacteristics::TargetCharacteristics() {
-  // TODO: Fill in the type information from command-line targeting information.
   auto enableCategoryKinds{[this](TypeCategory category) {
     for (int kind{0}; kind < maxKind; ++kind) {
       if (CanSupportType(category, kind)) {

diff  --git a/flang/lib/Frontend/CompilerInvocation.cpp b/flang/lib/Frontend/CompilerInvocation.cpp
index 88e6298d73c58..0ad63b06dd1bd 100644
--- a/flang/lib/Frontend/CompilerInvocation.cpp
+++ b/flang/lib/Frontend/CompilerInvocation.cpp
@@ -826,6 +826,14 @@ void CompilerInvocation::setSemanticsOpts(
       .set_warnOnNonstandardUsage(getEnableConformanceChecks())
       .set_warningsAreErrors(getWarnAsErr())
       .set_moduleFileSuffix(getModuleFileSuffix());
+
+  llvm::Triple targetTriple{llvm::Triple(this->targetOpts.triple)};
+  // FIXME: Handle real(3) ?
+  if (targetTriple.getArch() != llvm::Triple::ArchType::x86 &&
+      targetTriple.getArch() != llvm::Triple::ArchType::x86_64) {
+    semanticsContext->targetCharacteristics().DisableType(
+        Fortran::common::TypeCategory::Real, /*kind=*/10);
+  }
 }
 
 /// Set \p loweringOptions controlling lowering behavior based

diff  --git a/flang/module/__fortran_ieee_exceptions.f90 b/flang/module/__fortran_ieee_exceptions.f90
index 36213debde6d0..895eee544af0d 100644
--- a/flang/module/__fortran_ieee_exceptions.f90
+++ b/flang/module/__fortran_ieee_exceptions.f90
@@ -43,15 +43,25 @@
 ! Define specifics with 1 LOGICAL or REAL argument for generic G.
 #define SPECIFICS_L(G) \
   G(1) G(2) G(4) G(8)
+#if __x86_64__
 #define SPECIFICS_R(G) \
   G(2) G(3) G(4) G(8) G(10) G(16)
+#else
+#define SPECIFICS_R(G) \
+  G(2) G(3) G(4) G(8) G(16)
+#endif
 
 ! Set PRIVATE accessibility for specifics with 1 LOGICAL or REAL argument for
 ! generic G.
 #define PRIVATE_L(G) private :: \
   G##_l1, G##_l2, G##_l4, G##_l8
+#if __x86_64__
 #define PRIVATE_R(G) private :: \
   G##_a2, G##_a3, G##_a4, G##_a8, G##_a10, G##_a16
+#else
+#define PRIVATE_R(G) private :: \
+  G##_a2, G##_a3, G##_a4, G##_a8, G##_a16
+#endif
 
   interface ieee_get_flag
     elemental subroutine ieee_get_flag_0(flag, flag_value)

diff  --git a/flang/module/ieee_arithmetic.f90 b/flang/module/ieee_arithmetic.f90
index 00f25f6a437aa..20e63e1bf96d2 100644
--- a/flang/module/ieee_arithmetic.f90
+++ b/flang/module/ieee_arithmetic.f90
@@ -99,14 +99,20 @@ end function ieee_round_ne
   G(1) G(2) G(4) G(8) G(16)
 #define SPECIFICS_L(G) \
   G(1) G(2) G(4) G(8)
+#if __x86_64__
 #define SPECIFICS_R(G) \
   G(2) G(3) G(4) G(8) G(10) G(16)
+#else
+#define SPECIFICS_R(G) \
+  G(2) G(3) G(4) G(8) G(16)
+#endif
 #define SPECIFICS_II(G) \
   G(1,1) G(1,2) G(1,4) G(1,8) G(1,16) \
   G(2,1) G(2,2) G(2,4) G(2,8) G(2,16) \
   G(4,1) G(4,2) G(4,4) G(4,8) G(4,16) \
   G(8,1) G(8,2) G(8,4) G(8,8) G(8,16) \
   G(16,1) G(16,2) G(16,4) G(16,8) G(16,16)
+#if __x86_64__
 #define SPECIFICS_RI(G) \
   G(2,1) G(2,2) G(2,4) G(2,8) G(2,16) \
   G(3,1) G(3,2) G(3,4) G(3,8) G(3,16) \
@@ -114,6 +120,16 @@ end function ieee_round_ne
   G(8,1) G(8,2) G(8,4) G(8,8) G(8,16) \
   G(10,1) G(10,2) G(10,4) G(10,8) G(10,16) \
   G(16,1) G(16,2) G(16,4) G(16,8) G(16,16)
+#else
+#define SPECIFICS_RI(G) \
+  G(2,1) G(2,2) G(2,4) G(2,8) G(2,16) \
+  G(3,1) G(3,2) G(3,4) G(3,8) G(3,16) \
+  G(4,1) G(4,2) G(4,4) G(4,8) G(4,16) \
+  G(8,1) G(8,2) G(8,4) G(8,8) G(8,16) \
+  G(16,1) G(16,2) G(16,4) G(16,8) G(16,16)
+#endif
+
+#if __x86_64__
 #define SPECIFICS_RR(G) \
   G(2,2) G(2,3) G(2,4) G(2,8) G(2,10) G(2,16) \
   G(3,2) G(3,3) G(3,4) G(3,8) G(3,10) G(3,16) \
@@ -121,6 +137,14 @@ end function ieee_round_ne
   G(8,2) G(8,3) G(8,4) G(8,8) G(8,10) G(8,16) \
   G(10,2) G(10,3) G(10,4) G(10,8) G(10,10) G(10,16) \
   G(16,2) G(16,3) G(16,4) G(16,8) G(16,10) G(16,16)
+#else
+#define SPECIFICS_RR(G) \
+  G(2,2) G(2,3) G(2,4) G(2,8) G(2,16) \
+  G(3,2) G(3,3) G(3,4) G(3,8) G(3,16) \
+  G(4,2) G(4,3) G(4,4) G(4,8) G(4,16) \
+  G(8,2) G(8,3) G(8,4) G(8,8) G(8,16) \
+  G(16,2) G(16,3) G(16,4) G(16,8) G(16,16)
+#endif
 
 ! Set PRIVATE accessibility for specifics with 1 or 2 INTEGER, LOGICAL, or REAL
 ! arguments for generic G.
@@ -128,14 +152,20 @@ end function ieee_round_ne
   G##_i1, G##_i2, G##_i4, G##_i8, G##_i16
 #define PRIVATE_L(G) private :: \
   G##_l1, G##_l2, G##_l4, G##_l8
+#if __x86_64__
 #define PRIVATE_R(G) private :: \
   G##_a2, G##_a3, G##_a4, G##_a8, G##_a10, G##_a16
+#else
+#define PRIVATE_R(G) private :: \
+  G##_a2, G##_a3, G##_a4, G##_a8, G##_a16
+#endif
 #define PRIVATE_II(G) private :: \
   G##_i1_i1, G##_i1_i2, G##_i1_i4, G##_i1_i8, G##_i1_i16, \
   G##_i2_i1, G##_i2_i2, G##_i2_i4, G##_i2_i8, G##_i2_i16, \
   G##_i4_i1, G##_i4_i2, G##_i4_i4, G##_i4_i8, G##_i4_i16, \
   G##_i8_i1, G##_i8_i2, G##_i8_i4, G##_i8_i8, G##_i8_i16, \
   G##_i16_i1, G##_i16_i2, G##_i16_i4, G##_i16_i8, G##_i16_i16
+#if __x86_64__
 #define PRIVATE_RI(G) private :: \
   G##_a2_i1, G##_a2_i2, G##_a2_i4, G##_a2_i8, G##_a2_i16, \
   G##_a3_i1, G##_a3_i2, G##_a3_i4, G##_a3_i8, G##_a3_i16, \
@@ -143,6 +173,15 @@ end function ieee_round_ne
   G##_a8_i1, G##_a8_i2, G##_a8_i4, G##_a8_i8, G##_a8_i16, \
   G##_a10_i1, G##_a10_i2, G##_a10_i4, G##_a10_i8, G##_a10_i16, \
   G##_a16_i1, G##_a16_i2, G##_a16_i4, G##_a16_i8, G##_a16_i16
+#else
+#define PRIVATE_RI(G) private :: \
+  G##_a2_i1, G##_a2_i2, G##_a2_i4, G##_a2_i8, G##_a2_i16, \
+  G##_a3_i1, G##_a3_i2, G##_a3_i4, G##_a3_i8, G##_a3_i16, \
+  G##_a4_i1, G##_a4_i2, G##_a4_i4, G##_a4_i8, G##_a4_i16, \
+  G##_a8_i1, G##_a8_i2, G##_a8_i4, G##_a8_i8, G##_a8_i16, \
+  G##_a16_i1, G##_a16_i2, G##_a16_i4, G##_a16_i8, G##_a16_i16
+#endif
+#if __x86_64__
 #define PRIVATE_RR(G) private :: \
   G##_a2_a2, G##_a2_a3, G##_a2_a4, G##_a2_a8, G##_a2_a10, G##_a2_a16, \
   G##_a3_a2, G##_a3_a3, G##_a3_a4, G##_a3_a8, G##_a3_a10, G##_a3_a16, \
@@ -150,6 +189,14 @@ end function ieee_round_ne
   G##_a8_a2, G##_a8_a3, G##_a8_a4, G##_a8_a8, G##_a8_a10, G##_a8_a16, \
   G##_a10_a2, G##_a10_a3, G##_a10_a4, G##_a10_a8, G##_a10_a10, G##_a10_a16, \
   G##_a16_a2, G##_a16_a3, G##_a16_a4, G##_a16_a8, G##_a16_a10, G##_a16_a16
+#else
+#define PRIVATE_RR(G) private :: \
+  G##_a2_a2, G##_a2_a3, G##_a2_a4, G##_a2_a8, G##_a2_a16, \
+  G##_a3_a2, G##_a3_a3, G##_a3_a4, G##_a3_a8, G##_a3_a16, \
+  G##_a4_a2, G##_a4_a3, G##_a4_a4, G##_a4_a8, G##_a4_a16, \
+  G##_a8_a2, G##_a8_a3, G##_a8_a4, G##_a8_a8, G##_a8_a16, \
+  G##_a16_a2, G##_a16_a3, G##_a16_a4, G##_a16_a8, G##_a16_a16
+#endif
 
 #define IEEE_CLASS_R(XKIND) \
   elemental type(ieee_class_type) function ieee_class_a##XKIND(x); \

diff  --git a/flang/test/Evaluate/folding07.f90 b/flang/test/Evaluate/folding07.f90
index fd106ab9bf016..3b6a99df38826 100644
--- a/flang/test/Evaluate/folding07.f90
+++ b/flang/test/Evaluate/folding07.f90
@@ -25,9 +25,11 @@ module m
   real(8), parameter :: &
     eps8 = epsilon(0._8), zeps8 = real(z'3cb0000000000000', kind=8), &
     deps8 = 2.2204460492503130808472633361816406250e-16_8
+#if __x86_64__
   real(10), parameter :: &
     eps10 = epsilon(0._10), zeps10 = real(z'3fc08000000000000000', kind=10), &
     deps10 = 1.08420217248550443400745280086994171142578125e-19_10
+#endif
   real(16), parameter :: &
     eps16 = epsilon(0._16), &
     zeps16 = real(z'3f8f0000000000000000000000000000', kind=16), &
@@ -36,7 +38,9 @@ module m
   logical, parameter :: test_eps3 = eps3 == zeps3 .and. eps3 == deps3
   logical, parameter :: test_eps4 = eps4 == zeps4 .and. eps4 == deps4
   logical, parameter :: test_eps8 = eps8 == zeps8 .and. eps8 == deps8
+#if __x86_64__
   logical, parameter :: test_eps10 = eps10 == zeps10 .and. eps10 == deps10
+#endif
   logical, parameter :: test_eps16 = eps16 == zeps16 .and. eps16 == deps16
 
   integer(1), parameter :: &
@@ -73,6 +77,7 @@ module m
                &1540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868&
                &5084551339423045832369032229481658085593321233482747978262041447231687381771809192998812504040261841&
                &24858368e308_8
+#if __x86_64__
   real(10), parameter :: &
     ahuge10 = huge(0._10), zahuge10 = real(z'7ffeffffffffffffffff', kind=10), &
     dahuge10 = 1.1897314953572317650212638530309702051690633222946242004403237338917370055229707226164102903365288828&
@@ -125,6 +130,7 @@ module m
                 &8416350972529537091114317204887747405539054009425375424119317944175137064689643861517718849867010341&
                 &5325423859110896247108853858086888377772586485641459342621210866475884892600317623459607695088491496&
                 &6244415660441955208681198977024e4932_10
+#endif
   real(16), parameter :: &
     ahuge16 = huge(0._16), zahuge16 = real(z'7ffeffffffffffffffffffffffffffff', kind=16), &
     dahuge16 = 1.1897314953572317650857593266280070161964690526416940455296988842121635797553123923249740128484620735&
@@ -181,20 +187,26 @@ module m
   logical, parameter :: test_ahuge3 = ahuge3 == zahuge3 .and. ahuge3 == dahuge3
   logical, parameter :: test_ahuge4 = ahuge4 == zahuge4 .and. ahuge4 == dahuge4
   logical, parameter :: test_ahuge8 = ahuge8 == zahuge8 .and. ahuge8 == dahuge8
+#if __x86_64__
   logical, parameter :: test_ahuge10 = ahuge10 == zahuge10 .and. ahuge10 == dahuge10
+#endif
   logical, parameter :: test_ahuge16 = ahuge16 == zahuge16 .and. ahuge16 == dahuge16
 
   real(2), parameter :: tiny2 = tiny(0._2), ztiny2 = real(z'0400', kind=2)
   real(3), parameter :: tiny3 = tiny(0._3), ztiny3 = real(z'0080', kind=3)
   real(4), parameter :: tiny4 = tiny(0._4), ztiny4 = real(z'00800000', kind=4)
   real(8), parameter :: tiny8 = tiny(0._8), ztiny8 = real(z'0010000000000000', kind=8)
+#if __x86_64__
   real(10), parameter :: tiny10 = tiny(0._10), ztiny10 = real(z'00018000000000000000', kind=10)
+#endif
   real(16), parameter :: tiny16 = tiny(0._16), ztiny16 = real(z'00010000000000000000000000000000', kind=16)
   logical, parameter :: test_tiny2 = tiny2 == ztiny2
   logical, parameter :: test_tiny3 = tiny3 == ztiny3
   logical, parameter :: test_tiny4 = tiny4 == ztiny4
   logical, parameter :: test_tiny8 = tiny8 == ztiny8
+#if __x86_64__
   logical, parameter :: test_tiny10 = tiny10 == ztiny10
+#endif
   logical, parameter :: test_tiny16 = tiny16 == ztiny16
 
   real,    parameter :: nan = real(z'7fc12345')
@@ -222,13 +234,17 @@ module m
     max3 = maxexponent(0._3), &
     max4 = maxexponent(0._4), &
     max8 = maxexponent(0._8), &
-    max10 = maxexponent(0._10), &
     max16 = maxexponent(0._16)
+#if __x86_64__
+  integer, parameter :: max10 = maxexponent(0._10)
+#endif
   logical, parameter :: test_max2 = max2 == 16
   logical, parameter :: test_max3 = max3 == 128
   logical, parameter :: test_max4 = max4 == 128
   logical, parameter :: test_max8 = max8 == 1024
+#if __x86_64__
   logical, parameter :: test_max10 = max10 == 16384
+#endif
   logical, parameter :: test_max16 = max16 == 16384
 
   integer, parameter :: &
@@ -236,13 +252,17 @@ module m
     min3 = minexponent(0._3), &
     min4 = minexponent(0._4), &
     min8 = minexponent(0._8), &
-    min10 = minexponent(0._10), &
     min16 = minexponent(0._16)
+#if __x86_64__
+  integer, parameter :: min10 = minexponent(0._10)
+#endif
   logical, parameter :: test_min2 = min2 == -13
   logical, parameter :: test_min3 = min3 == -125
   logical, parameter :: test_min4 = min4 == -125
   logical, parameter :: test_min8 = min8 == -1021
+#if __x86_64__
   logical, parameter :: test_min10 = min10 == -16381
+#endif
   logical, parameter :: test_min16 = min16 == -16381
 
   integer, parameter :: &
@@ -262,13 +282,18 @@ module m
     arange3 = range(0._3), zrange3 = range((0._3, 0._3)), &
     arange4 = range(0._4), zrange4 = range((0._4, 0._4)), &
     arange8 = range(0._8), zrange8 = range((0._8, 0._8)), &
-    arange10 = range(0._10), zrange10 = range((0._10, 0._10)), &
     arange16 = range(0._16), zrange16 = range((0._16, 0._16))
+#if __x86_64__
+  integer, parameter :: arange10 = &
+    range(0._10), zrange10 = range((0._10, 0._10))
+#endif
   logical, parameter :: test_arange2 = arange2 == 4 .and. zrange2 == 4
   logical, parameter :: test_arange3 = arange3 == 37 .and. zrange3 == 37
   logical, parameter :: test_zrange4 = arange4 == 37 .and. zrange4 == 37
   logical, parameter :: test_zrange8 = arange8 == 307 .and. zrange8 == 307
+#if __x86_64__
   logical, parameter :: test_zrange10 = arange10 == 4931 .and. zrange10 == 4931
+#endif
   logical, parameter :: test_zrange16 = arange16 == 4931 .and. zrange16 == 4931
 
   logical, parameter :: test_set_exponent_z = set_exponent(0., 999) == 0.

diff  --git a/flang/test/Semantics/kinds03.f90 b/flang/test/Semantics/kinds03.f90
index 58a41a70ad7a5..751d4a9ffa3cb 100644
--- a/flang/test/Semantics/kinds03.f90
+++ b/flang/test/Semantics/kinds03.f90
@@ -60,9 +60,6 @@
  !DEF: /MainProgram1/a8 ObjectEntity TYPE(rpdt(k=8_4))
  type(rpdt(8)) :: a8
  !REF: /MainProgram1/rpdt
- !DEF: /MainProgram1/a10 ObjectEntity TYPE(rpdt(k=10_4))
- type(rpdt(10)) :: a10
- !REF: /MainProgram1/rpdt
  !DEF: /MainProgram1/a16 ObjectEntity TYPE(rpdt(k=16_4))
  type(rpdt(16)) :: a16
  !REF: /MainProgram1/zpdt
@@ -75,9 +72,6 @@
  !DEF: /MainProgram1/z8 ObjectEntity TYPE(zpdt(k=8_4))
  type(zpdt(8)) :: z8
  !REF: /MainProgram1/zpdt
- !DEF: /MainProgram1/z10 ObjectEntity TYPE(zpdt(k=10_4))
- type(zpdt(10)) :: z10
- !REF: /MainProgram1/zpdt
  !DEF: /MainProgram1/z16 ObjectEntity TYPE(zpdt(k=16_4))
  type(zpdt(16)) :: z16
  !REF: /MainProgram1/lpdt

diff  --git a/flang/test/Semantics/modfile26.f90 b/flang/test/Semantics/modfile26.f90
index 77bef3104bd89..09dc8b0954d63 100644
--- a/flang/test/Semantics/modfile26.f90
+++ b/flang/test/Semantics/modfile26.f90
@@ -3,7 +3,7 @@
 ! RADIX, DIGITS
 
 module m1
-  ! INTEGER(KIND=1)  handles  0 <= P < 3
+  ! INTEGER(KIND=1)  handles       P < 3
   ! INTEGER(KIND=2)  handles  3 <= P < 5
   ! INTEGER(KIND=4)  handles  5 <= P < 10
   ! INTEGER(KIND=8)  handles 10 <= P < 19
@@ -17,50 +17,46 @@ module m1
   logical, parameter :: ipcheck = &
     all([1, 1, 2, 2, 4, 4, 8, 8, 16, 16, -1] == intpkinds)
 
-  ! REAL(KIND=2)  handles  0 <= P < 4  (if available)
-  ! REAL(KIND=3)  handles  0 <= P < 3  (if available)
+  ! REAL(KIND=2)  handles       P < 4  (if available)
+  ! REAL(KIND=3)  handles       P < 3  (if available)
   ! REAL(KIND=4)  handles  4 <= P < 7
   ! REAL(KIND=8)  handles  7 <= P < 16
-  ! REAL(KIND=10) handles 16 <= P < 19 (if available; ifort is KIND=16)
   ! REAL(KIND=16) handles 19 <= P < 34 (would be 32 with Power double/double)
   integer, parameter :: realprecs(*) = &
     [precision(0._2), precision(0._3), precision(0._4), precision(0._8), &
-     precision(0._10), precision(0._16)]
-  logical, parameter :: rpreccheck = all([3, 2, 6, 15, 18, 33] == realprecs)
-  integer, parameter :: realpvals(*) = [0, 3, 4, 6, 7, 15, 16, 18, 19, 33, 34]
+     precision(0._16)]
+  logical, parameter :: rpreccheck = all([3, 2, 6, 15, 33] == realprecs)
+  integer, parameter :: realpvals(*) = [0, 3, 4, 6, 7, 15, 19, 33, 34]
   integer, parameter :: realpkinds(*) = &
     [(selected_real_kind(realpvals(j),0),j=1,size(realpvals))]
   logical, parameter :: realpcheck = &
-    all([2, 2, 4, 4, 8, 8, 10, 10, 16, 16, -1] == realpkinds)
-  ! REAL(KIND=2)  handles  0 <= R < 5 (if available)
+    all([2, 2, 4, 4, 8, 8, 16, 16, -1] == realpkinds)
+  ! REAL(KIND=2)  handles       R < 5 (if available)
   ! REAL(KIND=3)  handles  5 <= R < 38 (if available, same range as KIND=4)
   ! REAL(KIND=4)  handles  5 <= R < 38 (if no KIND=3)
   ! REAL(KIND=8)  handles 38 <= R < 308
-  ! REAL(KIND=10) handles 308 <= R < 4932 (if available; ifort is KIND=16)
   ! REAL(KIND=16) handles 308 <= R < 4932 (except Power double/double)
   integer, parameter :: realranges(*) = &
-    [range(0._2), range(0._3), range(0._4), range(0._8), range(0._10), &
-     range(0._16)]
+    [range(0._2), range(0._3), range(0._4), range(0._8), range(0._16)]
   logical, parameter :: rrangecheck = &
-    all([4, 37, 37, 307, 4931, 4931] == realranges)
+    all([4, 37, 37, 307, 4931] == realranges)
   integer, parameter :: realrvals(*) = &
-    [0, 4, 5, 37, 38, 307, 308, 4931, 4932]
+    [0, 4, 5, 37, 38, 307, 4932]
   integer, parameter :: realrkinds(*) = &
     [(selected_real_kind(0,realrvals(j)),j=1,size(realrvals))]
   logical, parameter :: realrcheck = &
-    all([2, 2, 3, 3, 8, 8, 10, 10, -2] == realrkinds)
+    all([2, 2, 3, 3, 8, 8, -2] == realrkinds)
   logical, parameter :: radixcheck = &
     all([radix(0._2), radix(0._3), radix(0._4), radix(0._8), &
-         radix(0._10), radix(0._16)] == 2)
+         radix(0._16)] == 2)
   integer, parameter :: intdigits(*) = &
     [digits(0_1), digits(0_2), digits(0_4), digits(0_8), digits(0_16)]
   logical, parameter :: intdigitscheck = &
     all([7, 15, 31, 63, 127] == intdigits)
   integer, parameter :: realdigits(*) = &
-    [digits(0._2), digits(0._3), digits(0._4), digits(0._8), digits(0._10), &
-     digits(0._16)]
+    [digits(0._2), digits(0._3), digits(0._4), digits(0._8), digits(0._16)]
   logical, parameter :: realdigitscheck = &
-    all([11, 8, 24, 53, 64, 113] == realdigits)
+    all([11, 8, 24, 53, 113] == realdigits)
 end module m1
 !Expect: m1.mod
 !module m1
@@ -73,23 +69,23 @@ end module m1
 !intrinsic::selected_int_kind
 !intrinsic::size
 !logical(4),parameter::ipcheck=.true._4
-!integer(4),parameter::realprecs(1_8:*)=[INTEGER(4)::3_4,2_4,6_4,15_4,18_4,33_4]
+!integer(4),parameter::realprecs(1_8:*)=[INTEGER(4)::3_4,2_4,6_4,15_4,33_4]
 !intrinsic::precision
 !logical(4),parameter::rpreccheck=.true._4
-!integer(4),parameter::realpvals(1_8:*)=[INTEGER(4)::0_4,3_4,4_4,6_4,7_4,15_4,16_4,18_4,19_4,33_4,34_4]
-!integer(4),parameter::realpkinds(1_8:*)=[INTEGER(4)::2_4,2_4,4_4,4_4,8_4,8_4,10_4,10_4,16_4,16_4,-1_4]
+!integer(4),parameter::realpvals(1_8:*)=[INTEGER(4)::0_4,3_4,4_4,6_4,7_4,15_4,19_4,33_4,34_4]
+!integer(4),parameter::realpkinds(1_8:*)=[INTEGER(4)::2_4,2_4,4_4,4_4,8_4,8_4,16_4,16_4,-1_4]
 !intrinsic::selected_real_kind
 !logical(4),parameter::realpcheck=.true._4
-!integer(4),parameter::realranges(1_8:*)=[INTEGER(4)::4_4,37_4,37_4,307_4,4931_4,4931_4]
+!integer(4),parameter::realranges(1_8:*)=[INTEGER(4)::4_4,37_4,37_4,307_4,4931_4]
 !logical(4),parameter::rrangecheck=.true._4
-!integer(4),parameter::realrvals(1_8:*)=[INTEGER(4)::0_4,4_4,5_4,37_4,38_4,307_4,308_4,4931_4,4932_4]
-!integer(4),parameter::realrkinds(1_8:*)=[INTEGER(4)::2_4,2_4,3_4,3_4,8_4,8_4,10_4,10_4,-2_4]
+!integer(4),parameter::realrvals(1_8:*)=[INTEGER(4)::0_4,4_4,5_4,37_4,38_4,307_4,4932_4]
+!integer(4),parameter::realrkinds(1_8:*)=[INTEGER(4)::2_4,2_4,3_4,3_4,8_4,8_4,-2_4]
 !logical(4),parameter::realrcheck=.true._4
 !logical(4),parameter::radixcheck=.true._4
 !intrinsic::radix
 !integer(4),parameter::intdigits(1_8:*)=[INTEGER(4)::7_4,15_4,31_4,63_4,127_4]
 !intrinsic::digits
 !logical(4),parameter::intdigitscheck=.true._4
-!integer(4),parameter::realdigits(1_8:*)=[INTEGER(4)::11_4,8_4,24_4,53_4,64_4,113_4]
+!integer(4),parameter::realdigits(1_8:*)=[INTEGER(4)::11_4,8_4,24_4,53_4,113_4]
 !logical(4),parameter::realdigitscheck=.true._4
 !end

diff  --git a/flang/test/Semantics/real10-x86-01.f90 b/flang/test/Semantics/real10-x86-01.f90
new file mode 100644
index 0000000000000..f715a78b9b363
--- /dev/null
+++ b/flang/test/Semantics/real10-x86-01.f90
@@ -0,0 +1,28 @@
+! RUN: %python %S/test_symbols.py %s %flang_fc1
+! REQUIRES: x86-registered-target
+
+ !DEF: /MainProgram1/rpdt DerivedType
+ !DEF: /MainProgram1/rpdt/k TypeParam INTEGER(4)
+ type :: rpdt(k)
+  !REF: /MainProgram1/rpdt/k
+  integer, kind :: k
+  !REF: /MainProgram1/rpdt/k
+  !DEF: /MainProgram1/rpdt/x ObjectEntity REAL(int(int(k,kind=4),kind=8))
+  real(kind=k) :: x
+ end type rpdt
+ !DEF: /MainProgram1/zpdt DerivedType
+ !DEF: /MainProgram1/zpdt/k TypeParam INTEGER(4)
+ type :: zpdt(k)
+  !REF: /MainProgram1/zpdt/k
+  integer, kind :: k
+  !REF: /MainProgram1/zpdt/k
+  !DEF: /MainProgram1/zpdt/x ObjectEntity COMPLEX(int(int(k,kind=4),kind=8))
+  complex(kind=k) :: x
+ end type zpdt
+ !REF: /MainProgram1/rpdt
+ !DEF: /MainProgram1/a10 ObjectEntity TYPE(rpdt(k=10_4))
+ type(rpdt(10)) :: a10
+ !REF: /MainProgram1/zpdt
+ !DEF: /MainProgram1/z10 ObjectEntity TYPE(zpdt(k=10_4))
+ type(zpdt(10)) :: z10
+end program

diff  --git a/flang/test/Semantics/real10-x86-02.f90 b/flang/test/Semantics/real10-x86-02.f90
new file mode 100644
index 0000000000000..b20b5ba3f6dbc
--- /dev/null
+++ b/flang/test/Semantics/real10-x86-02.f90
@@ -0,0 +1,48 @@
+! RUN: %python %S/test_modfile.py %s %flang_fc1
+! REQUIRES: x86-registered-target
+! Intrinsics SELECTED_INT_KIND, SELECTED_REAL_KIND, PRECISION, RANGE,
+! RADIX, DIGITS
+
+module m1
+  ! REAL(KIND=10) handles 16 <= P < 19 (if available; ifort is KIND=16)
+  integer, parameter :: realprec = precision(0._10)
+  logical, parameter :: rpreccheck = 18 == realprec
+  integer, parameter :: realpvals(*) = [16, 18]
+  integer, parameter :: realpkinds(*) = &
+    [(selected_real_kind(realpvals(j),0),j=1,size(realpvals))]
+  logical, parameter :: realpcheck = all([10, 10] == realpkinds)
+  ! REAL(KIND=10) handles 308 <= R < 4932 (if available; ifort is KIND=16)
+  integer, parameter :: realrange = range(0._10)
+  logical, parameter :: rrangecheck = 4931 == realrange
+  integer, parameter :: realrvals(*) = [308, 4931]
+  integer, parameter :: realrkinds(*) = &
+    [(selected_real_kind(0,realrvals(j)),j=1,size(realrvals))]
+  logical, parameter :: realrcheck = all([10, 10] == realrkinds)
+  logical, parameter :: radixcheck = radix(0._10) == 2
+
+  integer, parameter :: realdigits = digits(0._10)
+  logical, parameter :: realdigitscheck = 64 == realdigits
+end module m1
+!Expect: m1.mod
+!module m1
+!integer(4),parameter::realprec=18_4
+!intrinsic::precision
+!logical(4),parameter::rpreccheck=.true._4
+!integer(4),parameter::realpvals(1_8:*)=[INTEGER(4)::16_4,18_4]
+!integer(4),parameter::realpkinds(1_8:*)=[INTEGER(4)::10_4,10_4]
+!intrinsic::selected_real_kind
+!intrinsic::size
+!logical(4),parameter::realpcheck=.true._4
+!intrinsic::all
+!integer(4),parameter::realrange=4931_4
+!intrinsic::range
+!logical(4),parameter::rrangecheck=.true._4
+!integer(4),parameter::realrvals(1_8:*)=[INTEGER(4)::308_4,4931_4]
+!integer(4),parameter::realrkinds(1_8:*)=[INTEGER(4)::10_4,10_4]
+!logical(4),parameter::realrcheck=.true._4
+!logical(4),parameter::radixcheck=.true._4
+!intrinsic::radix
+!integer(4),parameter::realdigits=64_4
+!intrinsic::digits
+!logical(4),parameter::realdigitscheck=.true._4
+!end

diff  --git a/flang/test/Semantics/realkinds-aarch64-01.f90 b/flang/test/Semantics/realkinds-aarch64-01.f90
new file mode 100644
index 0000000000000..36a04e05f2742
--- /dev/null
+++ b/flang/test/Semantics/realkinds-aarch64-01.f90
@@ -0,0 +1,11 @@
+! RUN: %python %S/test_modfile.py %s %flang_fc1 -triple aarch64-unknown-linux-gnu
+! REQUIRES: aarch64-registered-target
+
+module m1
+  logical, parameter :: realpcheck = 16 == selected_real_kind(16)
+end module m1
+!Expect: m1.mod
+!module m1
+!logical(4),parameter::realpcheck=.true._4
+!intrinsic::selected_real_kind
+!end

diff  --git a/flang/tools/bbc/bbc.cpp b/flang/tools/bbc/bbc.cpp
index 133da66b7355e..ec778a423a6de 100644
--- a/flang/tools/bbc/bbc.cpp
+++ b/flang/tools/bbc/bbc.cpp
@@ -47,10 +47,12 @@
 #include "mlir/Pass/PassRegistry.h"
 #include "mlir/Transforms/GreedyPatternRewriteDriver.h"
 #include "mlir/Transforms/Passes.h"
+#include "llvm/ADT/Triple.h"
 #include "llvm/Passes/OptimizationLevel.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorOr.h"
 #include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Host.h"
 #include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"
@@ -331,6 +333,15 @@ int main(int argc, char **argv) {
       .set_warnOnNonstandardUsage(warnStdViolation)
       .set_warningsAreErrors(warnIsError);
 
+  llvm::Triple targetTriple{llvm::Triple(
+      llvm::Triple::normalize(llvm::sys::getDefaultTargetTriple()))};
+  // FIXME: Handle real(3) ?
+  if (targetTriple.getArch() != llvm::Triple::ArchType::x86 &&
+      targetTriple.getArch() != llvm::Triple::ArchType::x86_64) {
+    semanticsContext.targetCharacteristics().DisableType(
+        Fortran::common::TypeCategory::Real, /*kind=*/10);
+  }
+
   return mlir::failed(convertFortranSourceToMLIR(
       inputFilename, options, programPrefix, semanticsContext, passPipe));
 }


        


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