From 2cb48eaeb89ec06fb6676c2388df6d91df12cd98 Mon Sep 17 00:00:00 2001 From: Dale Johannesen Date: Tue, 7 Oct 2008 18:54:28 +0000 Subject: [PATCH] Model hardwired inputs & outputs of x86 8-bit divides correctly. Fixes local RA miscompilation of gcc.c-torture/execute/20020904-1.c -O0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57257 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86InstrInfo.td | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td index 691a7cfe7b5..f635d7a542b 100644 --- a/lib/Target/X86/X86InstrInfo.td +++ b/lib/Target/X86/X86InstrInfo.td @@ -728,7 +728,7 @@ def IMUL32m : I<0xF7, MRM5m, (outs), (ins i32mem:$src), } // unsigned division/remainder -let Defs = [AX,EFLAGS], Uses = [AL,AH] in +let Defs = [AL,AH,EFLAGS], Uses = [AX] in def DIV8r : I<0xF6, MRM6r, (outs), (ins GR8:$src), // AX/r8 = AL,AH "div{b}\t$src", []>; let Defs = [AX,DX,EFLAGS], Uses = [AX,DX] in @@ -738,7 +738,7 @@ let Defs = [EAX,EDX,EFLAGS], Uses = [EAX,EDX] in def DIV32r : I<0xF7, MRM6r, (outs), (ins GR32:$src), // EDX:EAX/r32 = EAX,EDX "div{l}\t$src", []>; let mayLoad = 1 in { -let Defs = [AX,EFLAGS], Uses = [AL,AH] in +let Defs = [AL,AH,EFLAGS], Uses = [AX] in def DIV8m : I<0xF6, MRM6m, (outs), (ins i8mem:$src), // AX/[mem8] = AL,AH "div{b}\t$src", []>; let Defs = [AX,DX,EFLAGS], Uses = [AX,DX] in @@ -750,7 +750,7 @@ def DIV32m : I<0xF7, MRM6m, (outs), (ins i32mem:$src), // EDX:EAX/[mem32] = } // Signed division/remainder. -let Defs = [AX,EFLAGS], Uses = [AL,AH] in +let Defs = [AL,AH,EFLAGS], Uses = [AX] in def IDIV8r : I<0xF6, MRM7r, (outs), (ins GR8:$src), // AX/r8 = AL,AH "idiv{b}\t$src", []>; let Defs = [AX,DX,EFLAGS], Uses = [AX,DX] in @@ -760,7 +760,7 @@ let Defs = [EAX,EDX,EFLAGS], Uses = [EAX,EDX] in def IDIV32r: I<0xF7, MRM7r, (outs), (ins GR32:$src), // EDX:EAX/r32 = EAX,EDX "idiv{l}\t$src", []>; let mayLoad = 1, mayLoad = 1 in { -let Defs = [AX,EFLAGS], Uses = [AL,AH] in +let Defs = [AL,AH,EFLAGS], Uses = [AX] in def IDIV8m : I<0xF6, MRM7m, (outs), (ins i8mem:$src), // AX/[mem8] = AL,AH "idiv{b}\t$src", []>; let Defs = [AX,DX,EFLAGS], Uses = [AX,DX] in