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54 lines
1.3 KiB
LLVM
54 lines
1.3 KiB
LLVM
; RUN: llc < %s -march=x86-64 -O0 | FileCheck %s --check-prefix=X64
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; RUN: llc < %s -march=x86 -O0 | FileCheck %s --check-prefix=X32
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; GEP indices are interpreted as signed integers, so they
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; should be sign-extended to 64 bits on 64-bit targets.
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; PR3181
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define i32 @test1(i32 %t3, i32* %t1) nounwind {
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%t9 = getelementptr i32* %t1, i32 %t3 ; <i32*> [#uses=1]
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%t15 = load i32* %t9 ; <i32> [#uses=1]
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ret i32 %t15
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; X32: test1:
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; X32: movl (%ecx,%eax,4), %eax
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; X32: ret
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; X64: test1:
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; X64: movslq %edi, %rax
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; X64: movl (%rsi,%rax,4), %eax
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; X64: ret
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}
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define i32 @test2(i64 %t3, i32* %t1) nounwind {
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%t9 = getelementptr i32* %t1, i64 %t3 ; <i32*> [#uses=1]
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%t15 = load i32* %t9 ; <i32> [#uses=1]
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ret i32 %t15
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; X32: test2:
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; X32: movl (%eax,%ecx,4), %eax
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; X32: ret
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; X64: test2:
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; X64: movl (%rsi,%rdi,4), %eax
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; X64: ret
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}
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; PR4984
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define i8 @test3(i8* %start) nounwind {
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entry:
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%A = getelementptr i8* %start, i64 -2 ; <i8*> [#uses=1]
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%B = load i8* %A, align 1 ; <i8> [#uses=1]
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ret i8 %B
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; X32: test3:
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; X32: movl 4(%esp), %eax
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; X32: movb -2(%eax), %al
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; X32: ret
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; X64: test3:
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; X64: movb -2(%rdi), %al
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; X64: ret
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}
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