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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
49 lines
1.1 KiB
LLVM
49 lines
1.1 KiB
LLVM
; RUN: llc < %s -mcpu=atom -mtriple=i686-linux -no-x86-call-frame-opt | FileCheck -check-prefix=ATOM %s
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; RUN: llc < %s -mcpu=core2 -mtriple=i686-linux -no-x86-call-frame-opt | FileCheck %s
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declare void @use_arr(i8*)
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declare void @many_params(i32, i32, i32, i32, i32, i32)
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define void @test1() nounwind {
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; ATOM-LABEL: test1:
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; ATOM: leal -1052(%esp), %esp
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; ATOM-NOT: sub
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; ATOM: call
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; ATOM: leal 1052(%esp), %esp
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; CHECK-LABEL: test1:
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; CHECK: subl
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; CHECK: call
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; CHECK-NOT: lea
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%arr = alloca [1024 x i8], align 16
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%arr_ptr = getelementptr inbounds [1024 x i8], [1024 x i8]* %arr, i8 0, i8 0
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call void @use_arr(i8* %arr_ptr)
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ret void
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}
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define void @test2() nounwind {
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; ATOM-LABEL: test2:
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; ATOM: leal -28(%esp), %esp
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; ATOM: call
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; ATOM: leal 28(%esp), %esp
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; CHECK-LABEL: test2:
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; CHECK-NOT: lea
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call void @many_params(i32 1, i32 2, i32 3, i32 4, i32 5, i32 6)
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ret void
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}
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define void @test3() nounwind {
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; ATOM-LABEL: test3:
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; ATOM: leal -8(%esp), %esp
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; ATOM: leal 8(%esp), %esp
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; CHECK-LABEL: test3:
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; CHECK-NOT: lea
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%x = alloca i32, align 4
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%y = alloca i32, align 4
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store i32 0, i32* %x, align 4
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ret void
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}
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