[llvm] r331154 - [X86] Remove support for accepting 'fnstsw %eax' and 'fnstsw %al'.
Craig Topper via llvm-commits
llvm-commits at lists.llvm.org
Sun Apr 29 18:53:12 PDT 2018
Author: ctopper
Date: Sun Apr 29 18:53:12 2018
New Revision: 331154
URL: http://llvm.org/viewvc/llvm-project?rev=331154&view=rev
Log:
[X86] Remove support for accepting 'fnstsw %eax' and 'fnstsw %al'.
I assume this was done because gas accepted it at one point, but current versions of gas don't.
Modified:
llvm/trunk/lib/Target/X86/X86InstrInfo.td
llvm/trunk/test/MC/X86/intel-syntax.s
llvm/trunk/test/MC/X86/x86-64.s
Modified: llvm/trunk/lib/Target/X86/X86InstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86InstrInfo.td?rev=331154&r1=331153&r2=331154&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrInfo.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrInfo.td Sun Apr 29 18:53:12 2018
@@ -3151,10 +3151,7 @@ def : InstAlias<"fsub{r|}p\t{%st(0), $op
def : InstAlias<"fdiv{|r}p\t{%st(0), $op|$op, st(0)}", (DIVR_FPrST0 RST:$op)>;
def : InstAlias<"fdiv{r|}p\t{%st(0), $op|$op, st(0)}", (DIV_FPrST0 RST:$op)>;
-// We accept "fnstsw %eax" even though it only writes %ax.
-def : InstAlias<"fnstsw\t{%eax|eax}", (FNSTSW16r)>;
-def : InstAlias<"fnstsw\t{%al|al}" , (FNSTSW16r)>;
-def : InstAlias<"fnstsw" , (FNSTSW16r)>;
+def : InstAlias<"fnstsw" , (FNSTSW16r), 0>;
// lcall and ljmp aliases. This seems to be an odd mapping in 64-bit mode, but
// this is compatible with what GAS does.
Modified: llvm/trunk/test/MC/X86/intel-syntax.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/X86/intel-syntax.s?rev=331154&r1=331153&r2=331154&view=diff
==============================================================================
--- llvm/trunk/test/MC/X86/intel-syntax.s (original)
+++ llvm/trunk/test/MC/X86/intel-syntax.s Sun Apr 29 18:53:12 2018
@@ -551,13 +551,9 @@ test [ECX], AL
// CHECK: fnstsw %ax
// CHECK: fnstsw %ax
-// CHECK: fnstsw %ax
-// CHECK: fnstsw %ax
// CHECK: fnstsw (%eax)
fnstsw
fnstsw AX
-fnstsw EAX
-fnstsw AL
fnstsw WORD PTR [EAX]
// CHECK: faddp %st(1)
Modified: llvm/trunk/test/MC/X86/x86-64.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/X86/x86-64.s?rev=331154&r1=331153&r2=331154&view=diff
==============================================================================
--- llvm/trunk/test/MC/X86/x86-64.s (original)
+++ llvm/trunk/test/MC/X86/x86-64.s Sun Apr 29 18:53:12 2018
@@ -340,13 +340,9 @@ fucomi %st(2), %st
// CHECK: fnstsw %ax
// CHECK: fnstsw %ax
-// CHECK: fnstsw %ax
-// CHECK: fnstsw %ax
fnstsw
fnstsw %ax
-fnstsw %eax
-fnstsw %al
// rdar://8431880
// CHECK: rclb %bl
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