| ; RUN: opt < %s -instsimplify -S | FileCheck %s |
| ; RUN: opt < %s -passes=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-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 |
| ; CHECK-NEXT: ret i1 true |
| } |
| |
| define i8 @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-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-LABEL: @test_ctpop( |
| %x = call i256 @llvm.ctpop.i256(i256 10) |
| ret i256 %x |
| ; CHECK-NEXT: ret i256 2 |
| } |
| |
| ; Test a non-intrinsic that we know about as a library call. |
| declare float @fabs(float %x) |
| |
| define float @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 |
| ; passes have to do that. |
| ; CHECK-NEXT: call float @fabs |
| |
| 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 nonnull 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 |
| } |
| |
| define i32 @call_null() { |
| entry: |
| %call = call i32 null() |
| ret i32 %call |
| } |
| ; CHECK-LABEL: define i32 @call_null( |
| ; CHECK: ret i32 undef |
| |
| define i32 @call_undef() { |
| entry: |
| %call = call i32 undef() |
| ret i32 %call |
| } |
| ; CHECK-LABEL: define i32 @call_undef( |
| ; CHECK: ret i32 undef |
| |
| @GV = private constant [8 x i32] [i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49] |
| |
| define <8 x i32> @partial_masked_load() { |
| ; CHECK-LABEL: @partial_masked_load( |
| ; CHECK: ret <8 x i32> <i32 undef, i32 undef, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47> |
| %masked.load = call <8 x i32> @llvm.masked.load.v8i32.p0v8i32(<8 x i32>* bitcast (i32* getelementptr ([8 x i32], [8 x i32]* @GV, i64 0, i64 -2) to <8 x i32>*), i32 4, <8 x i1> <i1 false, i1 false, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true>, <8 x i32> undef) |
| ret <8 x i32> %masked.load |
| } |
| |
| define <8 x i32> @masked_load_undef_mask(<8 x i32>* %V) { |
| ; CHECK-LABEL: @masked_load_undef_mask( |
| ; CHECK: ret <8 x i32> <i32 1, i32 0, i32 1, i32 0, i32 1, i32 0, i32 1, i32 0> |
| %masked.load = call <8 x i32> @llvm.masked.load.v8i32.p0v8i32(<8 x i32>* %V, i32 4, <8 x i1> undef, <8 x i32> <i32 1, i32 0, i32 1, i32 0, i32 1, i32 0, i32 1, i32 0>) |
| ret <8 x i32> %masked.load |
| } |
| |
| declare noalias i8* @malloc(i64) |
| |
| declare <8 x i32> @llvm.masked.load.v8i32.p0v8i32(<8 x i32>*, i32, <8 x i1>, <8 x i32>) |
