1 ; Check that the __stack_chk_guard was placed in small data. 2 ; RUN: llc -march=hexagon -O2 -hexagon-small-data-threshold=4 < %s | FileCheck -check-prefix=GPREL %s 3 ; GPREL: memw(gp+#__stack_chk_guard) 4 5 ; For threshold less than 4 (size of address), the variable is not placed in small-data 6 ; RUN: llc -march=hexagon -O2 -hexagon-small-data-threshold=0 < %s | FileCheck -check-prefix=ABS %s 7 ; ABS: memw(##__stack_chk_guard) 8 9 @g0 = private unnamed_addr constant [37 x i8] c"This string is longer than 16 bytes\0A\00", align 1 10 @g1 = private unnamed_addr constant [15 x i8] c"\0AChar 20 = %c\0A\00", align 1 11 12 ; Function Attrs: noinline nounwind ssp 13 define zeroext i8 @f0(i32 %a0) #0 { 14 b0: 15 %v0 = alloca i32, align 4 16 %v1 = alloca [64 x i8], align 8 17 %v2 = alloca i8*, align 4 18 store i32 %a0, i32* %v0, align 4 19 store i8* getelementptr inbounds ([37 x i8], [37 x i8]* @g0, i32 0, i32 0), i8** %v2, align 4 20 %v3 = getelementptr inbounds [64 x i8], [64 x i8]* %v1, i32 0, i32 0 21 %v4 = load i8*, i8** %v2, align 4 22 %v5 = call i8* @f1(i8* %v3, i8* %v4) #2 23 %v6 = load i32, i32* %v0, align 4 24 %v7 = getelementptr inbounds [64 x i8], [64 x i8]* %v1, i32 0, i32 %v6 25 %v8 = load i8, i8* %v7, align 1 26 ret i8 %v8 27 } 28 29 ; Function Attrs: nounwind 30 declare i8* @f1(i8*, i8*) #1 31 32 ; Function Attrs: noinline nounwind ssp 33 define i32 @f2(i32 %a0, i8** %a1) #0 { 34 b0: 35 %v0 = alloca i32, align 4 36 %v1 = alloca i32, align 4 37 %v2 = alloca i8**, align 4 38 store i32 0, i32* %v0, align 4 39 store i32 %a0, i32* %v1, align 4 40 store i8** %a1, i8*** %v2, align 4 41 %v3 = call zeroext i8 @f0(i32 20) 42 %v4 = zext i8 %v3 to i32 43 %v5 = call i32 (i8*, ...) @f3(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @g1, i32 0, i32 0), i32 %v4) #2 44 ret i32 0 45 } 46 47 ; Function Attrs: nounwind 48 declare i32 @f3(i8*, ...) #1 49 50 attributes #0 = { noinline nounwind ssp "target-cpu"="hexagonv60" "target-features"="+hvx,+hvx-length64b" } 51 attributes #1 = { nounwind "target-cpu"="hexagonv60" "target-features"="+hvx,+hvx-length64b" } 52 attributes #2 = { nounwind } 53
