e08f1fda75
PR #80680 added bits in the codegen to lazily add convergence intrinsics when required. This logic relied on the LoopStack. The issue is when parsing the condition, the loopstack doesn't yet reflect the correct values, as expected since we are not yet in the loop. However, convergence tokens should sometimes already be available. The solution which seemed the simplest is to greedily generate the tokens when we generate SPIR-V. Fixes #88144 --------- Signed-off-by: Nathan Gauër <brioche@google.com>
120 lines
4.4 KiB
HLSL
120 lines
4.4 KiB
HLSL
// RUN: %clang_cc1 -std=hlsl2021 -finclude-default-header -x hlsl -triple \
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// RUN: spirv-pc-vulkan-library %s -emit-llvm -disable-llvm-passes -o - | FileCheck %s
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bool cond();
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void foo();
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void test1() {
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while (cond()) {
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}
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}
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// CHECK: define spir_func void @_Z5test1v() [[A0:#[0-9]+]] {
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// CHECK: entry:
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// CHECK: [[T0:%[0-9]+]] = call token @llvm.experimental.convergence.entry()
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// CHECK: while.cond:
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// CHECK: [[T1:%[0-9]+]] = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token [[T0]]) ]
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// CHECK: call spir_func noundef i1 @_Z4condv() [[A3:#[0-9]+]] [ "convergencectrl"(token [[T1]]) ]
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void test2() {
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while (cond()) {
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foo();
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}
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}
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// CHECK: define spir_func void @_Z5test2v() [[A0:#[0-9]+]] {
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// CHECK: entry:
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// CHECK: [[T0:%[0-9]+]] = call token @llvm.experimental.convergence.entry()
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// CHECK: while.cond:
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// CHECK: [[T1:%[0-9]+]] = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token [[T0]]) ]
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// CHECK: call spir_func noundef i1 @_Z4condv() [[A3]] [ "convergencectrl"(token [[T1]]) ]
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// CHECK: while.body:
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// CHECK: call spir_func void @_Z3foov() [[A3]] [ "convergencectrl"(token [[T1]]) ]
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void test3() {
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while (cond()) {
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if (cond())
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break;
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foo();
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}
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}
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// CHECK: define spir_func void @_Z5test3v() [[A0:#[0-9]+]] {
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// CHECK: entry:
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// CHECK: [[T0:%[0-9]+]] = call token @llvm.experimental.convergence.entry()
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// CHECK: while.cond:
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// CHECK: [[T1:%[0-9]+]] = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token [[T0]]) ]
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// CHECK: call spir_func noundef i1 @_Z4condv() [[A3]] [ "convergencectrl"(token [[T1]]) ]
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// CHECK: if.then:
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// CHECK: br label %while.end
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// CHECK: if.end:
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// CHECK: call spir_func void @_Z3foov() [[A3]] [ "convergencectrl"(token [[T1]]) ]
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// CHECK: br label %while.cond
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void test4() {
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while (cond()) {
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if (cond()) {
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foo();
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break;
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}
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}
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}
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// CHECK: define spir_func void @_Z5test4v() [[A0:#[0-9]+]] {
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// CHECK: entry:
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// CHECK: [[T0:%[0-9]+]] = call token @llvm.experimental.convergence.entry()
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// CHECK: while.cond:
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// CHECK: [[T1:%[0-9]+]] = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token [[T0]]) ]
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// CHECK: call spir_func noundef i1 @_Z4condv() [[A3]] [ "convergencectrl"(token [[T1]]) ]
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// CHECK: if.then:
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// CHECK: call spir_func void @_Z3foov() [[A3]] [ "convergencectrl"(token [[T1]]) ]
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// CHECK: br label %while.end
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// CHECK: if.end:
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// CHECK: br label %while.cond
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void test5() {
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while (cond()) {
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while (cond()) {
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if (cond()) {
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foo();
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break;
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}
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}
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}
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}
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// CHECK: define spir_func void @_Z5test5v() [[A0:#[0-9]+]] {
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// CHECK: entry:
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// CHECK: [[T0:%[0-9]+]] = call token @llvm.experimental.convergence.entry()
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// CHECK: while.cond:
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// CHECK: [[T1:%[0-9]+]] = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token [[T0]]) ]
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// CHECK: call spir_func noundef i1 @_Z4condv() [[A3]] [ "convergencectrl"(token [[T1]]) ]
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// CHECK: while.cond2:
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// CHECK: [[T2:%[0-9]+]] = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token [[T1]]) ]
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// CHECK: call spir_func noundef i1 @_Z4condv() [[A3]] [ "convergencectrl"(token [[T2]]) ]
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// CHECK: if.then:
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// CHECK: call spir_func void @_Z3foov() [[A3]] [ "convergencectrl"(token [[T2]]) ]
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// CHECK: br label %while.end
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void test6() {
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while (cond()) {
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while (cond()) {
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}
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if (cond()) {
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foo();
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break;
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}
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}
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}
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// CHECK: define spir_func void @_Z5test6v() [[A0:#[0-9]+]] {
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// CHECK: entry:
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// CHECK: [[T0:%[0-9]+]] = call token @llvm.experimental.convergence.entry()
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// CHECK: while.cond:
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// CHECK: [[T1:%[0-9]+]] = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token [[T0]]) ]
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// CHECK: call spir_func noundef i1 @_Z4condv() [[A3]] [ "convergencectrl"(token [[T1]]) ]
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// CHECK: while.cond2:
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// CHECK: [[T2:%[0-9]+]] = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token [[T1]]) ]
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// CHECK: call spir_func noundef i1 @_Z4condv() [[A3]] [ "convergencectrl"(token [[T2]]) ]
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// CHECK: if.then:
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// CHECK: call spir_func void @_Z3foov() [[A3]] [ "convergencectrl"(token [[T1]]) ]
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// CHECK: br label %while.end
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// CHECK-DAG: attributes [[A0]] = { {{.*}}convergent{{.*}} }
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// CHECK-DAG: attributes [[A3]] = { {{.*}}convergent{{.*}} }
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