29 lines
849 B
LLVM
29 lines
849 B
LLVM
; RUN: llc -verify-machineinstrs -o - %s -mtriple=arm64-apple-ios7.0 | FileCheck %s
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define i64 @test_free_zext(i8* %a, i16* %b) {
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; CHECK-LABEL: test_free_zext:
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; CHECK-DAG: ldrb w[[A:[0-9]+]], [x0]
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; CHECK: ldrh w[[B:[0-9]+]], [x1]
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; CHECK: add x0, x[[B]], x[[A]]
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%1 = load i8, i8* %a, align 1
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%conv = zext i8 %1 to i64
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%2 = load i16, i16* %b, align 2
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%conv1 = zext i16 %2 to i64
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%add = add nsw i64 %conv1, %conv
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ret i64 %add
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}
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define void @test_free_zext2(i32* %ptr, i32* %dst1, i64* %dst2) {
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; CHECK-LABEL: test_free_zext2:
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; CHECK: ldrh w[[A:[0-9]+]], [x0]
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; CHECK-NOT: and x
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; CHECK: str w[[A]], [x1]
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; CHECK: str x[[A]], [x2]
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%load = load i32, i32* %ptr, align 8
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%load16 = and i32 %load, 65535
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%load64 = zext i32 %load16 to i64
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store i32 %load16, i32* %dst1, align 4
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store i64 %load64, i64* %dst2, align 8
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ret void
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}
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