[llvm] [AMDGPU] Fix SIFixSGPRCopies handling of STRICT_WWM and friends (PR #142122)

[Jay Foad via llvm-commits]

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@@ -7,19 +7,21 @@ define amdgpu_gs i32 @main() {
 ; CHECK-NEXT:    s_bitcmp1_b32 0, 0
 ; CHECK-NEXT:    s_mov_b32 s0, 0
 ; CHECK-NEXT:    s_cselect_b32 s1, -1, 0
-; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_1) | instskip(NEXT) | instid1(VALU_DEP_1)
+; CHECK-NEXT:    s_or_saveexec_b32 s2, -1
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jayfoad wrote:

Here is the code to switch into WWM which was missing before.

https://github.com/llvm/llvm-project/pull/142122