78 lines
2.5 KiB
LLVM
78 lines
2.5 KiB
LLVM
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; RUN: llc < %s -mtriple=aarch64-linux-gnu -mattr=+lsl-fast | FileCheck %s
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%struct.a = type [256 x i16]
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%struct.b = type [256 x i32]
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%struct.c = type [256 x i64]
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declare void @foo()
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define i16 @halfword(%struct.a* %ctx, i32 %xor72) nounwind {
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; CHECK-LABEL: halfword:
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; CHECK: ubfx [[REG:x[0-9]+]], x1, #9, #8
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; CHECK: ldrh [[REG1:w[0-9]+]], [{{.*}}[[REG2:x[0-9]+]], [[REG]], lsl #1]
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; CHECK: mov [[REG3:x[0-9]+]], [[REG2]]
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; CHECK: strh [[REG1]], [{{.*}}[[REG3]], [[REG]], lsl #1]
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%shr81 = lshr i32 %xor72, 9
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%conv82 = zext i32 %shr81 to i64
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%idxprom83 = and i64 %conv82, 255
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%arrayidx86 = getelementptr inbounds %struct.a, %struct.a* %ctx, i64 0, i64 %idxprom83
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%result = load i16, i16* %arrayidx86, align 2
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call void @foo()
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store i16 %result, i16* %arrayidx86, align 2
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ret i16 %result
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}
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define i32 @word(%struct.b* %ctx, i32 %xor72) nounwind {
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; CHECK-LABEL: word:
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; CHECK: ubfx [[REG:x[0-9]+]], x1, #9, #8
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; CHECK: ldr [[REG1:w[0-9]+]], [{{.*}}[[REG2:x[0-9]+]], [[REG]], lsl #2]
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; CHECK: mov [[REG3:x[0-9]+]], [[REG2]]
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; CHECK: str [[REG1]], [{{.*}}[[REG3]], [[REG]], lsl #2]
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%shr81 = lshr i32 %xor72, 9
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%conv82 = zext i32 %shr81 to i64
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%idxprom83 = and i64 %conv82, 255
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%arrayidx86 = getelementptr inbounds %struct.b, %struct.b* %ctx, i64 0, i64 %idxprom83
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%result = load i32, i32* %arrayidx86, align 4
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call void @foo()
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store i32 %result, i32* %arrayidx86, align 4
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ret i32 %result
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}
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define i64 @doubleword(%struct.c* %ctx, i32 %xor72) nounwind {
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; CHECK-LABEL: doubleword:
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; CHECK: ubfx [[REG:x[0-9]+]], x1, #9, #8
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; CHECK: ldr [[REG1:x[0-9]+]], [{{.*}}[[REG2:x[0-9]+]], [[REG]], lsl #3]
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; CHECK: mov [[REG3:x[0-9]+]], [[REG2]]
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; CHECK: str [[REG1]], [{{.*}}[[REG3]], [[REG]], lsl #3]
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%shr81 = lshr i32 %xor72, 9
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%conv82 = zext i32 %shr81 to i64
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%idxprom83 = and i64 %conv82, 255
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%arrayidx86 = getelementptr inbounds %struct.c, %struct.c* %ctx, i64 0, i64 %idxprom83
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%result = load i64, i64* %arrayidx86, align 8
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call void @foo()
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store i64 %result, i64* %arrayidx86, align 8
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ret i64 %result
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}
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define i64 @multi_use_non_memory(i64 %a, i64 %b) {
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; CHECK-LABEL: multi_use_non_memory:
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; CHECK: lsl [[REG1:x[0-9]+]], x0, #3
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; CHECK-NOT: cmp [[REG1]], x1, lsl # 3
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; CHECK-NEXT: lsl [[REG2:x[0-9]+]], x1, #3
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; CHECK-NEXT: cmp [[REG1]], [[REG2]]
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entry:
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%mul1 = shl i64 %a, 3
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%mul2 = shl i64 %b, 3
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%cmp = icmp slt i64 %mul1, %mul2
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br i1 %cmp, label %truebb, label %falsebb
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truebb:
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tail call void @foo()
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unreachable
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falsebb:
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%cmp2 = icmp sgt i64 %mul1, %mul2
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br i1 %cmp2, label %exitbb, label %endbb
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exitbb:
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ret i64 %mul1
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endbb:
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ret i64 %mul2
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}
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