address review

Author: PankajDwivedi-25

llvm/test/CodeGen/AMDGPU/fix-illegal-copy.ll

@@ -1,17 +1,13 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
 ; RUN: llc < %s -mtriple=amdgcn -mcpu=gfx1100 | FileCheck %s -check-prefixes=GFX11
 
-define amdgpu_ps i32 @s_copysign_uniform(float inreg %x, float inreg %y) {
-; GFX11-LABEL: s_copysign_uniform:
+define amdgpu_ps float @uniform_fpext(half inreg %x) {
+; GFX11-LABEL: uniform_fpext:
 ; GFX11:       ; %bb.0:
-; GFX11-NEXT:    v_mov_b32_e32 v0, s1
-; GFX11-NEXT:    s_delay_alu instid0(VALU_DEP_1) | instskip(NEXT) | instid1(VALU_DEP_1)
-; GFX11-NEXT:    v_bfi_b32 v0, 0x7fffffff, s0, v0
-; GFX11-NEXT:    v_readfirstlane_b32 s0, v0
+; GFX11-NEXT:    v_cvt_f32_f16_e32 v0, s0
 ; GFX11-NEXT:    ; return to shader part epilog
-  %op = call float @llvm.copysign.f32(float %x, float %y)
-  %cast = bitcast float %op to i32
-  ret i32 %cast
+  %f = fpext half %x to float
+  ret float %f
 }
 
 define amdgpu_ps i64 @uniform_vbfi_val_op(i32 inreg %a, i32 inreg %b) {