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4c3c7c8211
manually and pass all (now) 4 arguments to the mul libcall. Add a new ExpandLibCall for just this (copied gratuitously from type legalization). Fixes rdar://9292577 llvm-svn: 129842
42 lines
1.1 KiB
LLVM
42 lines
1.1 KiB
LLVM
; RUN: llc < %s -mtriple=thumbv6-apple-darwin | FileCheck %s
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%umul.ty = type { i32, i1 }
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define i32 @func(i32 %a) nounwind {
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; CHECK: func
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; CHECK: muldi3
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%tmp0 = tail call %umul.ty @llvm.umul.with.overflow.i32(i32 %a, i32 37)
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%tmp1 = extractvalue %umul.ty %tmp0, 0
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%tmp2 = select i1 undef, i32 -1, i32 %tmp1
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ret i32 %tmp2
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}
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declare %umul.ty @llvm.umul.with.overflow.i32(i32, i32) nounwind readnone
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define i32 @f(i32 %argc, i8** %argv) ssp {
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; CHECK: func
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; CHECK: str r0
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; CHECK: movs r2
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; CHECK: mov r1
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; CHECK: mov r3
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; CHECK: muldi3
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%1 = alloca i32, align 4
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%2 = alloca i32, align 4
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%3 = alloca i8**, align 4
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%m_degree = alloca i32, align 4
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store i32 0, i32* %1
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store i32 %argc, i32* %2, align 4
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store i8** %argv, i8*** %3, align 4
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store i32 10, i32* %m_degree, align 4
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%4 = load i32* %m_degree, align 4
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%5 = call %umul.ty @llvm.umul.with.overflow.i32(i32 %4, i32 8)
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%6 = extractvalue %umul.ty %5, 1
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%7 = extractvalue %umul.ty %5, 0
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%8 = select i1 %6, i32 -1, i32 %7
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%9 = call noalias i8* @_Znam(i32 %8)
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%10 = bitcast i8* %9 to double*
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ret i32 0
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}
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declare noalias i8* @_Znam(i32)
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