[llvm] r281739 - [AArch64][GlobalISel] Add default regbank mapping for int<>FP.

[Ahmed Bougacha via llvm-commits]

Author: ab
Date: Fri Sep 16 10:12:46 2016
New Revision: 281739

URL: http://llvm.org/viewvc/llvm-project?rev=281739&view=rev
Log:
[AArch64][GlobalISel] Add default regbank mapping for int<>FP.

Modified:
    llvm/trunk/lib/Target/AArch64/AArch64RegisterBankInfo.cpp
    llvm/trunk/test/CodeGen/AArch64/GlobalISel/regbankselect-default.mir

Modified: llvm/trunk/lib/Target/AArch64/AArch64RegisterBankInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64RegisterBankInfo.cpp?rev=281739&r1=281738&r2=281739&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64RegisterBankInfo.cpp (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64RegisterBankInfo.cpp Fri Sep 16 10:12:46 2016
@@ -224,6 +224,16 @@ AArch64RegisterBankInfo::getInstrMapping
   // Some of the floating-point instructions have mixed GPR and FPR operands:
   // fine-tune the computed mapping.
   switch (Opc) {
+  case TargetOpcode::G_SITOFP:
+  case TargetOpcode::G_UITOFP: {
+    OpBanks = {AArch64::FPRRegBankID, AArch64::GPRRegBankID};
+    break;
+  }
+  case TargetOpcode::G_FPTOSI:
+  case TargetOpcode::G_FPTOUI: {
+    OpBanks = {AArch64::GPRRegBankID, AArch64::FPRRegBankID};
+    break;
+  }
   case TargetOpcode::G_FCMP: {
     OpBanks = {AArch64::GPRRegBankID, /* Predicate */ 0, AArch64::FPRRegBankID,
                AArch64::FPRRegBankID};

Modified: llvm/trunk/test/CodeGen/AArch64/GlobalISel/regbankselect-default.mir
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/GlobalISel/regbankselect-default.mir?rev=281739&r1=281738&r2=281739&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/GlobalISel/regbankselect-default.mir (original)
+++ llvm/trunk/test/CodeGen/AArch64/GlobalISel/regbankselect-default.mir Fri Sep 16 10:12:46 2016
@@ -61,6 +61,11 @@
 
   define void @test_fcmp_s32() { ret void }
 
+  define void @test_sitofp_s64_s32() { ret void }
+  define void @test_uitofp_s32_s64() { ret void }
+
+  define void @test_fptosi_s64_s32() { ret void }
+  define void @test_fptoui_s32_s64() { ret void }
 ...
 
 ---
@@ -787,3 +792,79 @@ body: |
     %0(s32) = COPY %s0
     %1(s1) = G_FCMP floatpred(olt), %0, %0
 ...
+
+---
+# CHECK-LABEL: name: test_sitofp_s64_s32
+name:            test_sitofp_s64_s32
+legalized:       true
+# CHECK: registers:
+# CHECK:   - { id: 0, class: gpr }
+# CHECK:   - { id: 1, class: fpr }
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+body: |
+  bb.0:
+    liveins: %w0
+    ; CHECK:      %0(s32) = COPY %w0
+    ; CHECK:      %1(s64) = G_SITOFP %0
+    %0(s32) = COPY %w0
+    %1(s64) = G_SITOFP %0
+...
+
+---
+# CHECK-LABEL: name: test_uitofp_s32_s64
+name:            test_uitofp_s32_s64
+legalized:       true
+# CHECK: registers:
+# CHECK:   - { id: 0, class: gpr }
+# CHECK:   - { id: 1, class: fpr }
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+body: |
+  bb.0:
+    liveins: %x0
+    ; CHECK:      %0(s64) = COPY %x0
+    ; CHECK:      %1(s32) = G_UITOFP %0
+    %0(s64) = COPY %x0
+    %1(s32) = G_UITOFP %0
+...
+
+---
+# CHECK-LABEL: name: test_fptosi_s64_s32
+name:            test_fptosi_s64_s32
+legalized:       true
+# CHECK: registers:
+# CHECK:   - { id: 0, class: fpr }
+# CHECK:   - { id: 1, class: gpr }
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+body: |
+  bb.0:
+    liveins: %s0
+    ; CHECK:      %0(s32) = COPY %s0
+    ; CHECK:      %1(s64) = G_FPTOSI %0
+    %0(s32) = COPY %s0
+    %1(s64) = G_FPTOSI %0
+...
+
+---
+# CHECK-LABEL: name: test_fptoui_s32_s64
+name:            test_fptoui_s32_s64
+legalized:       true
+# CHECK: registers:
+# CHECK:   - { id: 0, class: fpr }
+# CHECK:   - { id: 1, class: gpr }
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+body: |
+  bb.0:
+    liveins: %d0
+    ; CHECK:      %0(s64) = COPY %d0
+    ; CHECK:      %1(s32) = G_FPTOUI %0
+    %0(s64) = COPY %d0
+    %1(s32) = G_FPTOUI %0
+...