derek.holloway
7502bf64a4
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52 lines
1.8 KiB
LLVM
52 lines
1.8 KiB
LLVM
; Check that the __stack_chk_guard was placed in small data.
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; RUN: llc -mtriple=hexagon -mtriple=hexagon-unknown-linux-gnu -O2 -hexagon-small-data-threshold=4 < %s | FileCheck -check-prefix=GPREL %s
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; GPREL: memw(gp+#__stack_chk_guard)
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; For threshold less than 4 (size of address), the variable is not placed in small-data
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; RUN: llc -mtriple=hexagon -mtriple=hexagon-unknown-linux-gnu -O2 -hexagon-small-data-threshold=0 < %s | FileCheck -check-prefix=ABS %s
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; ABS: memw(##__stack_chk_guard)
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@g0 = private unnamed_addr constant [37 x i8] c"This string is longer than 16 bytes\0A\00", align 1
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@g1 = private unnamed_addr constant [15 x i8] c"\0AChar 20 = %c\0A\00", align 1
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; Function Attrs: noinline nounwind ssp
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define zeroext i8 @f0(i32 %a0) #0 {
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b0:
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%v0 = alloca i32, align 4
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%v1 = alloca [64 x i8], align 8
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%v2 = alloca ptr, align 4
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store i32 %a0, ptr %v0, align 4
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store ptr @g0, ptr %v2, align 4
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%v4 = load ptr, ptr %v2, align 4
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%v5 = call ptr @f1(ptr %v1, ptr %v4) #2
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%v6 = load i32, ptr %v0, align 4
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%v7 = getelementptr inbounds [64 x i8], ptr %v1, i32 0, i32 %v6
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%v8 = load i8, ptr %v7, align 1
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ret i8 %v8
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}
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; Function Attrs: nounwind
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declare ptr @f1(ptr, ptr) #1
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; Function Attrs: noinline nounwind ssp
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define i32 @f2(i32 %a0, ptr %a1) #0 {
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b0:
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%v0 = alloca i32, align 4
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%v1 = alloca i32, align 4
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%v2 = alloca ptr, align 4
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store i32 0, ptr %v0, align 4
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store i32 %a0, ptr %v1, align 4
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store ptr %a1, ptr %v2, align 4
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%v3 = call zeroext i8 @f0(i32 20)
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%v4 = zext i8 %v3 to i32
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%v5 = call i32 (ptr, ...) @f3(ptr @g1, i32 %v4) #2
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ret i32 0
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}
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; Function Attrs: nounwind
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declare i32 @f3(ptr, ...) #1
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attributes #0 = { noinline nounwind ssp "target-cpu"="hexagonv60" "target-features"="+hvx,+hvx-length64b" }
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attributes #1 = { nounwind "target-cpu"="hexagonv60" "target-features"="+hvx,+hvx-length64b" }
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attributes #2 = { nounwind }
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