[clang] [RFC] Add clang atomic control options and pragmas (PR #102569)

[Matt Arsenault via cfe-commits]

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@@ -2,315 +2,195 @@
 // RUN: %clang_cc1 -fnative-half-arguments-and-returns -triple amdgcn-amd-amdhsa-gnu -target-cpu gfx900 -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK,SAFE %s
 // RUN: %clang_cc1 -fnative-half-arguments-and-returns -triple amdgcn-amd-amdhsa-gnu -target-cpu gfx900 -emit-llvm -munsafe-fp-atomics -o - %s | FileCheck -check-prefixes=CHECK,UNSAFE %s
 
-// SAFE-LABEL: define dso_local float @test_float_post_inc(
-// SAFE-SAME: ) #[[ATTR0:[0-9]+]] {
-// SAFE-NEXT:  [[ENTRY:.*:]]
-// SAFE-NEXT:    [[RETVAL:%.*]] = alloca float, align 4, addrspace(5)
-// SAFE-NEXT:    [[RETVAL_ASCAST:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL]] to ptr
-// SAFE-NEXT:    [[TMP0:%.*]] = atomicrmw fadd ptr addrspacecast (ptr addrspace(1) @test_float_post_inc.n to ptr), float 1.000000e+00 seq_cst, align 4
-// SAFE-NEXT:    ret float [[TMP0]]
-//
-// UNSAFE-LABEL: define dso_local float @test_float_post_inc(
-// UNSAFE-SAME: ) #[[ATTR0:[0-9]+]] {
-// UNSAFE-NEXT:  [[ENTRY:.*:]]
-// UNSAFE-NEXT:    [[RETVAL:%.*]] = alloca float, align 4, addrspace(5)
-// UNSAFE-NEXT:    [[RETVAL_ASCAST:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL]] to ptr
-// UNSAFE-NEXT:    [[TMP0:%.*]] = atomicrmw fadd ptr addrspacecast (ptr addrspace(1) @test_float_post_inc.n to ptr), float 1.000000e+00 seq_cst, align 4, !amdgpu.no.fine.grained.memory [[META3:![0-9]+]], !amdgpu.ignore.denormal.mode [[META3]]
-// UNSAFE-NEXT:    ret float [[TMP0]]
+// CHECK-LABEL: define dso_local float @test_float_post_inc(
+// CHECK-SAME: ) #[[ATTR0:[0-9]+]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    [[RETVAL:%.*]] = alloca float, align 4, addrspace(5)
+// CHECK-NEXT:    [[RETVAL_ASCAST:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL]] to ptr
+// CHECK-NEXT:    [[TMP0:%.*]] = atomicrmw fadd ptr addrspacecast (ptr addrspace(1) @test_float_post_inc.n to ptr), float 1.000000e+00 seq_cst, align 4
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arsenm wrote:

This lost the effect of -munsafe-fp-atomics

https://github.com/llvm/llvm-project/pull/102569