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; RUN: opt -S -nacl-strip-attributes %s | FileCheck %s
@var = unnamed_addr global i32 0
; CHECK: @var = global i32 0
define fastcc void @func_attrs(i32 inreg, i32 zeroext)
unnamed_addr noreturn nounwind readonly align 8 {
ret void
}
; CHECK: define void @func_attrs(i32, i32) {
define hidden void @hidden_visibility() {
ret void
}
; CHECK: define void @hidden_visibility() {
define protected void @protected_visibility() {
ret void
}
; CHECK: define void @protected_visibility() {
define void @call_attrs() {
call fastcc void @func_attrs(i32 inreg 10, i32 zeroext 20) noreturn nounwind readonly
ret void
}
; CHECK: define void @call_attrs()
; CHECK: call void @func_attrs(i32 10, i32 20){{$}}
; We currently don't attempt to strip attributes from intrinsic
; declarations because the reader automatically inserts attributes
; based on built-in knowledge of intrinsics, so it is difficult to get
; rid of them here.
declare i8* @llvm.nacl.read.tp()
; CHECK: declare i8* @llvm.nacl.read.tp() #{{[0-9]+}}
define void @arithmetic_attrs() {
%add = add nsw i32 1, 2
%shl = shl nuw i32 3, 4
%lshr = lshr exact i32 2, 1
ret void
}
; CHECK: define void @arithmetic_attrs() {
; CHECK-NEXT: %add = add i32 1, 2
; CHECK-NEXT: %shl = shl i32 3, 4
; CHECK-NEXT: %lshr = lshr i32 2, 1
; Implicit default alignments are changed to explicit alignments.
define void @default_alignment_attrs(float %f, double %d) {
load i8* null
load i32* null
load float* null
load double* null
store i8 100, i8* null
store i32 100, i32* null
store float %f, float* null
store double %d, double* null
ret void
}
; CHECK: define void @default_alignment_attrs
; CHECK-NEXT: load i8* null, align 1
; CHECK-NEXT: load i32* null, align 1
; CHECK-NEXT: load float* null, align 4
; CHECK-NEXT: load double* null, align 8
; CHECK-NEXT: store i8 100, i8* null, align 1
; CHECK-NEXT: store i32 100, i32* null, align 1
; CHECK-NEXT: store float %f, float* null, align 4
; CHECK-NEXT: store double %d, double* null, align 8
define void @reduce_alignment_assumptions() {
load i32* null, align 4
load float* null, align 2
load float* null, align 4
load float* null, align 8
load double* null, align 2
load double* null, align 8
load double* null, align 16
; Higher alignment assumptions must be retained for atomics.
load atomic i32* null seq_cst, align 4
load atomic i32* null seq_cst, align 8
store atomic i32 100, i32* null seq_cst, align 4
store atomic i32 100, i32* null seq_cst, align 8
ret void
}
; CHECK: define void @reduce_alignment_assumptions
; CHECK-NEXT: load i32* null, align 1
; CHECK-NEXT: load float* null, align 1
; CHECK-NEXT: load float* null, align 4
; CHECK-NEXT: load float* null, align 4
; CHECK-NEXT: load double* null, align 1
; CHECK-NEXT: load double* null, align 8
; CHECK-NEXT: load double* null, align 8
; CHECK-NEXT: load atomic i32* null seq_cst, align 4
; CHECK-NEXT: load atomic i32* null seq_cst, align 4
; CHECK-NEXT: store atomic i32 100, i32* null seq_cst, align 4
; CHECK-NEXT: store atomic i32 100, i32* null seq_cst, align 4
declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
declare void @llvm.memmove.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i32, i1)
define void @reduce_memcpy_alignment_assumptions(i8* %ptr) {
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %ptr, i8* %ptr,
i32 20, i32 4, i1 false)
call void @llvm.memmove.p0i8.p0i8.i32(i8* %ptr, i8* %ptr,
i32 20, i32 4, i1 false)
call void @llvm.memset.p0i8.i32(i8* %ptr, i8 99,
i32 20, i32 4, i1 false)
ret void
}
; CHECK: define void @reduce_memcpy_alignment_assumptions
; CHECK-NEXT: call void @llvm.memcpy.{{.*}} i32 20, i32 1, i1 false)
; CHECK-NEXT: call void @llvm.memmove.{{.*}} i32 20, i32 1, i1 false)
; CHECK-NEXT: call void @llvm.memset.{{.*}} i32 20, i32 1, i1 false)
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