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; RUN: pnacl-abicheck < %s | FileCheck %s
; Test the "align" attributes that are allowed on load and store
; instructions. Note that "cmpxchg" and "atomicrmw" do not take
; "align" attributes, so are not tested here.
define void @allowed_cases(i32 %ptr, float %f, double %d) {
%ptr.i32 = inttoptr i32 %ptr to i32*
load i32* %ptr.i32, align 1
store i32 123, i32* %ptr.i32, align 1
%ptr.float = inttoptr i32 %ptr to float*
load float* %ptr.float, align 1
load float* %ptr.float, align 4
store float %f, float* %ptr.float, align 1
store float %f, float* %ptr.float, align 4
%ptr.double = inttoptr i32 %ptr to double*
load double* %ptr.double, align 1
load double* %ptr.double, align 8
store double %d, double* %ptr.double, align 1
store double %d, double* %ptr.double, align 8
; Stricter alignments are required for atomics.
load atomic i32* %ptr.i32 seq_cst, align 4
store atomic i32 123, i32* %ptr.i32 seq_cst, align 4
load atomic float* %ptr.float seq_cst, align 4
store atomic float %f, float* %ptr.float seq_cst, align 4
load atomic double* %ptr.double seq_cst, align 8
store atomic double %d, double* %ptr.double seq_cst, align 8
ret void
}
; CHECK-NOT: disallowed
define void @rejected_cases(i32 %ptr, float %f, double %d) {
%ptr.i32 = inttoptr i32 %ptr to i32*
load i32* %ptr.i32, align 4
store i32 123, i32* %ptr.i32, align 4
; CHECK: disallowed: bad alignment: {{.*}} load i32{{.*}} align 4
; CHECK-NEXT: disallowed: bad alignment: store i32{{.*}} align 4
; Unusual, not-very-useful alignments are rejected.
%ptr.float = inttoptr i32 %ptr to float*
load float* %ptr.float, align 2
load float* %ptr.float, align 8
store float %f, float* %ptr.float, align 2
store float %f, float* %ptr.float, align 8
; CHECK-NEXT: disallowed: bad alignment: {{.*}} load float{{.*}} align 2
; CHECK-NEXT: disallowed: bad alignment: {{.*}} load float{{.*}} align 8
; CHECK-NEXT: disallowed: bad alignment: store float{{.*}} align 2
; CHECK-NEXT: disallowed: bad alignment: store float{{.*}} align 8
%ptr.double = inttoptr i32 %ptr to double*
load double* %ptr.double, align 2
load double* %ptr.double, align 4
store double %d, double* %ptr.double, align 2
store double %d, double* %ptr.double, align 4
; CHECK-NEXT: disallowed: bad alignment: {{.*}} load double{{.*}} align 2
; CHECK-NEXT: disallowed: bad alignment: {{.*}} load double{{.*}} align 4
; CHECK-NEXT: disallowed: bad alignment: store double{{.*}} align 2
; CHECK-NEXT: disallowed: bad alignment: store double{{.*}} align 4
; Too-small alignments for atomics are rejected.
load atomic i32* %ptr.i32 seq_cst, align 2
load atomic float* %ptr.float seq_cst, align 2
load atomic double* %ptr.double seq_cst, align 4
; CHECK-NEXT: disallowed: bad alignment: {{.*}} load atomic i32{{.*}} align 2
; CHECK-NEXT: disallowed: bad alignment: {{.*}} load atomic float{{.*}} align 2
; CHECK-NEXT: disallowed: bad alignment: {{.*}} load atomic double{{.*}} align 4
; Too-large alignments for atomics are also rejected.
load atomic i32* %ptr.i32 seq_cst, align 8
load atomic float* %ptr.float seq_cst, align 8
load atomic double* %ptr.double seq_cst, align 16
; CHECK-NEXT: disallowed: bad alignment: {{.*}} load atomic i32{{.*}} align 8
; CHECK-NEXT: disallowed: bad alignment: {{.*}} load atomic float{{.*}} align 8
; CHECK-NEXT: disallowed: bad alignment: {{.*}} load atomic double{{.*}} align 16
ret void
}
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