; RUN: opt -passes='spirv-structurizer' -S -mtriple=spirv-unknown-unknown %s | FileCheck %s ; CHECK-LABEL: define spir_func noundef i32 @test_branch ; CHECK: call void @llvm.spv.selection.merge.p0(ptr blockaddress(@test_branch, %if.end), i32 1) ; CHECK-NEXT: br i1 %cmp, label %if.then, label %if.else, !hlsl.controlflow.hint !{{[0-9]+}} define spir_func noundef i32 @test_branch(i32 noundef %X) { entry: %X.addr = alloca i32, align 4 %resp = alloca i32, align 4 store i32 %X, ptr %X.addr, align 4 %0 = load i32, ptr %X.addr, align 4 %cmp = icmp sgt i32 %0, 0 br i1 %cmp, label %if.then, label %if.else, !hlsl.controlflow.hint !0 if.then: ; preds = %entry %1 = load i32, ptr %X.addr, align 4 %sub = sub nsw i32 0, %1 store i32 %sub, ptr %resp, align 4 br label %if.end if.else: ; preds = %entry %2 = load i32, ptr %X.addr, align 4 %mul = mul nsw i32 %2, 2 store i32 %mul, ptr %resp, align 4 br label %if.end if.end: ; preds = %if.else, %if.then %3 = load i32, ptr %resp, align 4 ret i32 %3 } ; CHECK-LABEL: define spir_func noundef i32 @test_flatten ; CHECK: call void @llvm.spv.selection.merge.p0(ptr blockaddress(@test_flatten, %if.end), i32 2) ; CHECK-NEXT: br i1 %cmp, label %if.then, label %if.else, !hlsl.controlflow.hint !{{[0-9]+}} define spir_func noundef i32 @test_flatten(i32 noundef %X) { entry: %X.addr = alloca i32, align 4 %resp = alloca i32, align 4 store i32 %X, ptr %X.addr, align 4 %0 = load i32, ptr %X.addr, align 4 %cmp = icmp sgt i32 %0, 0 br i1 %cmp, label %if.then, label %if.else, !hlsl.controlflow.hint !1 if.then: ; preds = %entry %1 = load i32, ptr %X.addr, align 4 %sub = sub nsw i32 0, %1 store i32 %sub, ptr %resp, align 4 br label %if.end if.else: ; preds = %entry %2 = load i32, ptr %X.addr, align 4 %mul = mul nsw i32 %2, 2 store i32 %mul, ptr %resp, align 4 br label %if.end if.end: ; preds = %if.else, %if.then %3 = load i32, ptr %resp, align 4 ret i32 %3 } ; CHECK-LABEL: define spir_func noundef i32 @test_no_attr ; CHECK: call void @llvm.spv.selection.merge.p0(ptr blockaddress(@test_no_attr, %if.end), i32 0) ; CHECK-NEXT: br i1 %cmp, label %if.then, label %if.else define spir_func noundef i32 @test_no_attr(i32 noundef %X) { entry: %X.addr = alloca i32, align 4 %resp = alloca i32, align 4 store i32 %X, ptr %X.addr, align 4 %0 = load i32, ptr %X.addr, align 4 %cmp = icmp sgt i32 %0, 0 br i1 %cmp, label %if.then, label %if.else if.then: ; preds = %entry %1 = load i32, ptr %X.addr, align 4 %sub = sub nsw i32 0, %1 store i32 %sub, ptr %resp, align 4 br label %if.end if.else: ; preds = %entry %2 = load i32, ptr %X.addr, align 4 %mul = mul nsw i32 %2, 2 store i32 %mul, ptr %resp, align 4 br label %if.end if.end: ; preds = %if.else, %if.then %3 = load i32, ptr %resp, align 4 ret i32 %3 } !0 = !{!"hlsl.controlflow.hint", i32 1} !1 = !{!"hlsl.controlflow.hint", i32 2}