; RUN: opt < %s -instsimplify -S | FileCheck %s
declare {i8, i1} @llvm.uadd.with.overflow.i8(i8 %a, i8 %b)
+declare {i8, i1} @llvm.usub.with.overflow.i8(i8 %a, i8 %b)
+declare {i8, i1} @llvm.ssub.with.overflow.i8(i8 %a, i8 %b)
+declare {i8, i1} @llvm.umul.with.overflow.i8(i8 %a, i8 %b)
define i1 @test_uadd1() {
-; CHECK: @test_uadd1
+; CHECK-LABEL: @test_uadd1(
%x = call {i8, i1} @llvm.uadd.with.overflow.i8(i8 254, i8 3)
%overflow = extractvalue {i8, i1} %x, 1
ret i1 %overflow
}
define i8 @test_uadd2() {
-; CHECK: @test_uadd2
+; CHECK-LABEL: @test_uadd2(
%x = call {i8, i1} @llvm.uadd.with.overflow.i8(i8 254, i8 44)
%result = extractvalue {i8, i1} %x, 0
ret i8 %result
; CHECK-NEXT: ret i8 42
}
+define {i8, i1} @test_usub1(i8 %V) {
+; CHECK-LABEL: @test_usub1(
+ %x = call {i8, i1} @llvm.usub.with.overflow.i8(i8 %V, i8 %V)
+ ret {i8, i1} %x
+; CHECK-NEXT: ret { i8, i1 } zeroinitializer
+}
+
+define {i8, i1} @test_ssub1(i8 %V) {
+; CHECK-LABEL: @test_ssub1(
+ %x = call {i8, i1} @llvm.ssub.with.overflow.i8(i8 %V, i8 %V)
+ ret {i8, i1} %x
+; CHECK-NEXT: ret { i8, i1 } zeroinitializer
+}
+
+define {i8, i1} @test_umul1(i8 %V) {
+; CHECK-LABEL: @test_umul1(
+ %x = call {i8, i1} @llvm.umul.with.overflow.i8(i8 %V, i8 0)
+ ret {i8, i1} %x
+; CHECK-NEXT: ret { i8, i1 } zeroinitializer
+}
+
declare i256 @llvm.cttz.i256(i256 %src, i1 %is_zero_undef)
define i256 @test_cttz() {
-; CHECK: @test_cttz
+; CHECK-LABEL: @test_cttz(
%x = call i256 @llvm.cttz.i256(i256 10, i1 false)
ret i256 %x
; CHECK-NEXT: ret i256 1
declare i256 @llvm.ctpop.i256(i256 %src)
define i256 @test_ctpop() {
-; CHECK: @test_ctpop
+; CHECK-LABEL: @test_ctpop(
%x = call i256 @llvm.ctpop.i256(i256 10)
ret i256 %x
; CHECK-NEXT: ret i256 2
declare float @fabs(float %x)
define float @test_fabs_libcall() {
-; CHECK: @test_fabs_libcall
+; CHECK-LABEL: @test_fabs_libcall(
%x = call float @fabs(float -42.0)
; This is still a real function call, so instsimplify won't nuke it -- other
ret float %x
; CHECK-NEXT: ret float 4.2{{0+}}e+01
}
+
+
+declare float @llvm.fabs.f32(float) nounwind readnone
+declare float @llvm.floor.f32(float) nounwind readnone
+declare float @llvm.ceil.f32(float) nounwind readnone
+declare float @llvm.trunc.f32(float) nounwind readnone
+declare float @llvm.rint.f32(float) nounwind readnone
+declare float @llvm.nearbyint.f32(float) nounwind readnone
+
+; Test idempotent intrinsics
+define float @test_idempotence(float %a) {
+; CHECK-LABEL: @test_idempotence(
+
+; CHECK: fabs
+; CHECK-NOT: fabs
+ %a0 = call float @llvm.fabs.f32(float %a)
+ %a1 = call float @llvm.fabs.f32(float %a0)
+
+; CHECK: floor
+; CHECK-NOT: floor
+ %b0 = call float @llvm.floor.f32(float %a)
+ %b1 = call float @llvm.floor.f32(float %b0)
+
+; CHECK: ceil
+; CHECK-NOT: ceil
+ %c0 = call float @llvm.ceil.f32(float %a)
+ %c1 = call float @llvm.ceil.f32(float %c0)
+
+; CHECK: trunc
+; CHECK-NOT: trunc
+ %d0 = call float @llvm.trunc.f32(float %a)
+ %d1 = call float @llvm.trunc.f32(float %d0)
+
+; CHECK: rint
+; CHECK-NOT: rint
+ %e0 = call float @llvm.rint.f32(float %a)
+ %e1 = call float @llvm.rint.f32(float %e0)
+
+; CHECK: nearbyint
+; CHECK-NOT: nearbyint
+ %f0 = call float @llvm.nearbyint.f32(float %a)
+ %f1 = call float @llvm.nearbyint.f32(float %f0)
+
+ %r0 = fadd float %a1, %b1
+ %r1 = fadd float %r0, %c1
+ %r2 = fadd float %r1, %d1
+ %r3 = fadd float %r2, %e1
+ %r4 = fadd float %r3, %f1
+
+ ret float %r4
+}
+
+define i8* @operator_new() {
+entry:
+ %call = tail call noalias i8* @_Znwm(i64 8)
+ %cmp = icmp eq i8* %call, null
+ br i1 %cmp, label %cast.end, label %cast.notnull
+
+cast.notnull: ; preds = %entry
+ %add.ptr = getelementptr inbounds i8, i8* %call, i64 4
+ br label %cast.end
+
+cast.end: ; preds = %cast.notnull, %entry
+ %cast.result = phi i8* [ %add.ptr, %cast.notnull ], [ null, %entry ]
+ ret i8* %cast.result
+
+; CHECK-LABEL: @operator_new
+; CHECK: br i1 false, label %cast.end, label %cast.notnull
+}
+
+declare noalias i8* @_Znwm(i64)
+
+%"struct.std::nothrow_t" = type { i8 }
+@_ZSt7nothrow = external global %"struct.std::nothrow_t"
+
+define i8* @operator_new_nothrow_t() {
+entry:
+ %call = tail call noalias i8* @_ZnamRKSt9nothrow_t(i64 8, %"struct.std::nothrow_t"* @_ZSt7nothrow)
+ %cmp = icmp eq i8* %call, null
+ br i1 %cmp, label %cast.end, label %cast.notnull
+
+cast.notnull: ; preds = %entry
+ %add.ptr = getelementptr inbounds i8, i8* %call, i64 4
+ br label %cast.end
+
+cast.end: ; preds = %cast.notnull, %entry
+ %cast.result = phi i8* [ %add.ptr, %cast.notnull ], [ null, %entry ]
+ ret i8* %cast.result
+
+; CHECK-LABEL: @operator_new_nothrow_t
+; CHECK: br i1 %cmp, label %cast.end, label %cast.notnull
+}
+
+declare i8* @_ZnamRKSt9nothrow_t(i64, %"struct.std::nothrow_t"*) nounwind
+
+define i8* @malloc_can_return_null() {
+entry:
+ %call = tail call noalias i8* @malloc(i64 8)
+ %cmp = icmp eq i8* %call, null
+ br i1 %cmp, label %cast.end, label %cast.notnull
+
+cast.notnull: ; preds = %entry
+ %add.ptr = getelementptr inbounds i8, i8* %call, i64 4
+ br label %cast.end
+
+cast.end: ; preds = %cast.notnull, %entry
+ %cast.result = phi i8* [ %add.ptr, %cast.notnull ], [ null, %entry ]
+ ret i8* %cast.result
+
+; CHECK-LABEL: @malloc_can_return_null
+; CHECK: br i1 %cmp, label %cast.end, label %cast.notnull
+}
+
+declare noalias i8* @malloc(i64)
projects / oota-llvm.git / blobdiff