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llvm-project/llvm/test/CodeGen/X86/2008-02-20-InlineAsmClobber.ll

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Rewrite some tests with FileCHeck in X86 codegen - Revise previous patches of the same purpose by fixing *) grep <PA> | not grep <PB> semantically is not the same as CHECK: <PA>{{^<PB>.*$}} as the former will check all occurrences of <PA> while the later only check the first match. As the result, CHECK needs putting in all place where <PA> occurs. *) grep <PA> | count <N> needs a final CHECK-NOT of the same pattern. (As 'CHECK-<N>' is proposed for discussion, converting 'grep | count <N>' where N > 1 is postponed.) llvm-svn: 180742
2013-04-30 06:41:29 +08:00
; RUN: llc < %s | FileCheck %s
Fix a (harmless) but where vregs were added to the used reg lists for inline asms. Fix PR2078 by marking aliases of registers used when a register is marked used. This prevents EAX from being allocated when AX is listed in the clobber set for the asm. llvm-svn: 47426
2008-02-21 12:55:52 +08:00
; PR2078
; The clobber list says that "ax" is clobbered. Make sure that eax isn't
; allocated to the input/output register.
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin8"
@pixels = weak global i32 0 ; <i32*> [#uses=2]
define void @test() nounwind {
entry:
%tmp = load i32* @pixels, align 4 ; <i32> [#uses=1]
Treat clobber operands like early clobbers: if we have any, we force sdisel to do all regalloc for an asm. This leads to gross but correct codegen. This fixes the rest of PR2078. llvm-svn: 47454
2008-02-22 03:43:13 +08:00
%tmp1 = tail call i32 asm sideeffect "a: $0 $1", "=r,0,~{dirflag},~{fpsr},~{flags},~{ax}"( i32 %tmp ) nounwind ; <i32> [#uses=1]
Fix a (harmless) but where vregs were added to the used reg lists for inline asms. Fix PR2078 by marking aliases of registers used when a register is marked used. This prevents EAX from being allocated when AX is listed in the clobber set for the asm. llvm-svn: 47426
2008-02-21 12:55:52 +08:00
store i32 %tmp1, i32* @pixels, align 4
ret void
}
Treat clobber operands like early clobbers: if we have any, we force sdisel to do all regalloc for an asm. This leads to gross but correct codegen. This fixes the rest of PR2078. llvm-svn: 47454
2008-02-22 03:43:13 +08:00
Rewrite some tests with FileCHeck in X86 codegen - Revise previous patches of the same purpose by fixing *) grep <PA> | not grep <PB> semantically is not the same as CHECK: <PA>{{^<PB>.*$}} as the former will check all occurrences of <PA> while the later only check the first match. As the result, CHECK needs putting in all place where <PA> occurs. *) grep <PA> | count <N> needs a final CHECK-NOT of the same pattern. (As 'CHECK-<N>' is proposed for discussion, converting 'grep | count <N>' where N > 1 is postponed.) llvm-svn: 180742
2013-04-30 06:41:29 +08:00
; CHECK: a:
; CHECK-NOT: ax
; CHECK: {{$}}
Treat clobber operands like early clobbers: if we have any, we force sdisel to do all regalloc for an asm. This leads to gross but correct codegen. This fixes the rest of PR2078. llvm-svn: 47454
2008-02-22 03:43:13 +08:00
define void @test2(i16* %block, i8* %pixels, i32 %line_size) nounwind {
entry:
%tmp1 = getelementptr i16* %block, i32 64 ; <i16*> [#uses=1]
%tmp3 = tail call i8* asm sideeffect "b: $0 $1 $2", "=r,r,0,~{dirflag},~{fpsr},~{flags},~{ax}"( i16* %tmp1, i8* %pixels ) nounwind ; <i8*> [#uses=0]
ret void
}
Rewrite some tests with FileCHeck in X86 codegen - Revise previous patches of the same purpose by fixing *) grep <PA> | not grep <PB> semantically is not the same as CHECK: <PA>{{^<PB>.*$}} as the former will check all occurrences of <PA> while the later only check the first match. As the result, CHECK needs putting in all place where <PA> occurs. *) grep <PA> | count <N> needs a final CHECK-NOT of the same pattern. (As 'CHECK-<N>' is proposed for discussion, converting 'grep | count <N>' where N > 1 is postponed.) llvm-svn: 180742
2013-04-30 06:41:29 +08:00
; CHECK: b:
; CHECK-NOT: ax
; CHECK: {{$}}