| Krzysztof Parzyszek | 046090d | 2018-03-12 14:01:28 +0000 | [diff] [blame] | 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 } |