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fe6fe553f7
The size savings are significant, and from what I can tell, both ICC and GCC do this. Differential Revision: http://reviews.llvm.org/D18573 llvm-svn: 264966
38 lines
1.0 KiB
LLVM
38 lines
1.0 KiB
LLVM
; RUN: llc < %s -mtriple=i386-pc-mingw32 | FileCheck %s -check-prefix=COFF
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; RUN: llc < %s -mtriple=i386-pc-mingw32-elf | FileCheck %s -check-prefix=ELF
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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"
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define void @foo1(i32 %N) nounwind {
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entry:
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; COFF: _foo1:
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; COFF: calll __alloca
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; ELF: foo1:
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; ELF: calll _alloca
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%tmp14 = alloca i32, i32 %N ; <i32*> [#uses=1]
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call void @bar1( i32* %tmp14 )
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ret void
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}
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declare void @bar1(i32*)
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define void @foo2(i32 inreg %N) nounwind {
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entry:
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; COFF: _foo2:
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; COFF: andl $-16, %esp
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; COFF: pushl %eax
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; COFF: calll __alloca
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; COFF: movl 8012(%esp), %eax
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; ELF: foo2:
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; ELF: andl $-16, %esp
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; ELF: pushl %eax
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; ELF: calll _alloca
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; ELF: movl 8012(%esp), %eax
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%A2 = alloca [2000 x i32], align 16 ; <[2000 x i32]*> [#uses=1]
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%A2.sub = getelementptr [2000 x i32], [2000 x i32]* %A2, i32 0, i32 0 ; <i32*> [#uses=1]
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call void @bar2( i32* %A2.sub, i32 %N )
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ret void
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}
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declare void @bar2(i32*, i32)
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