[AMDGPU][True16][CodeGen] add -real-true16 flag to a few gisel gfx12 test (#141503)

This is a NFC change.

Added "-mattr=-real-true16" to a few gfx12 tests. This is for the up
coming GFX12 true16 code change. Set these tests to use fake16 flow
since true16 mode are not fully functional for GISEL

Author: broxigarchen

llvm/test/CodeGen/AMDGPU/GlobalISel/clamp-fmed3-const-combine.ll

@@ -1,6 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc -global-isel -mtriple=amdgcn-amd-mesa3d -mcpu=gfx1010 -verify-machineinstrs < %s | FileCheck -check-prefix=GFX10 %s
-; RUN: llc -global-isel -mtriple=amdgcn-amd-mesa3d -mcpu=gfx1200 -verify-machineinstrs < %s | FileCheck -check-prefix=GFX12 %s
+; RUN: llc -global-isel -mtriple=amdgcn-amd-mesa3d -mcpu=gfx1200 -mattr=-real-true16 -verify-machineinstrs < %s | FileCheck -check-prefix=GFX12 %s
 
 define float @test_fmed3_f32_known_nnan_ieee_true(float %a) #0 {
 ; GFX10-LABEL: test_fmed3_f32_known_nnan_ieee_true:

llvm/test/CodeGen/AMDGPU/GlobalISel/clamp-minmax-const-combine.ll

@@ -1,6 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc -global-isel -mtriple=amdgcn-amd-mesa3d -mcpu=gfx1010 -verify-machineinstrs < %s | FileCheck -check-prefix=GFX10 %s
-; RUN: llc -global-isel -mtriple=amdgcn-amd-mesa3d -mcpu=gfx1200 -verify-machineinstrs < %s | FileCheck -check-prefix=GFX12 %s
+; RUN: llc -global-isel -mtriple=amdgcn-amd-mesa3d -mcpu=gfx1200 -mattr=-real-true16 -verify-machineinstrs < %s | FileCheck -check-prefix=GFX12 %s
 
 define float @test_min_max_ValK0_K1_f32(float %a) #0 {
 ; GFX10-LABEL: test_min_max_ValK0_K1_f32:

llvm/test/CodeGen/AMDGPU/GlobalISel/fmed3-min-max-const-combine.ll

@@ -1,7 +1,7 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc -global-isel -mtriple=amdgcn-amd-mesa3d -mcpu=gfx1010 -verify-machineinstrs < %s | FileCheck -check-prefix=GFX10 %s
 ; RUN: llc -global-isel -mtriple=amdgcn-amd-mesa3d -mcpu=gfx803 -verify-machineinstrs < %s | FileCheck -check-prefix=GFX8 %s
-; RUN: llc -global-isel -mtriple=amdgcn-amd-mesa3d -mcpu=gfx1200 -verify-machineinstrs < %s | FileCheck -check-prefix=GFX12 %s
+; RUN: llc -global-isel -mtriple=amdgcn-amd-mesa3d -mcpu=gfx1200 -mattr=-real-true16 -verify-machineinstrs < %s | FileCheck -check-prefix=GFX12 %s
 
 define float @test_min_max_ValK0_K1_f32(float %a) #0 {
 ; GFX10-LABEL: test_min_max_ValK0_K1_f32:

llvm/test/CodeGen/AMDGPU/GlobalISel/mul.ll

@@ -5,7 +5,7 @@
 ; RUN: llc -global-isel -mtriple=amdgcn -mcpu=gfx1010 -verify-machineinstrs < %s | FileCheck -check-prefixes=GFX10PLUS,GFX10 %s
 ; RUN: llc -global-isel -mtriple=amdgcn -mcpu=gfx1100 -mattr=+real-true16, -amdgpu-enable-delay-alu=0 -verify-machineinstrs < %s | FileCheck -check-prefixes=GFX10PLUS,GFX11,GFX11-TRUE16 %s
 ; RUN: llc -global-isel -mtriple=amdgcn -mcpu=gfx1100 -mattr=-real-true16, -amdgpu-enable-delay-alu=0 -verify-machineinstrs < %s | FileCheck -check-prefixes=GFX10PLUS,GFX11,GFX11-FAKE16 %s
-; RUN: llc -global-isel -mtriple=amdgcn -mcpu=gfx1200 -verify-machineinstrs < %s | FileCheck -check-prefixes=GFX12 %s
+; RUN: llc -global-isel -mtriple=amdgcn -mcpu=gfx1200 -mattr=-real-true16 -verify-machineinstrs < %s | FileCheck -check-prefixes=GFX12 %s
 
 define amdgpu_ps i16 @s_mul_i16(i16 inreg %num, i16 inreg %den) {
 ; GCN-LABEL: s_mul_i16:

llvm/test/CodeGen/AMDGPU/GlobalISel/wmma-gfx12-w32-f16-f32-matrix-modifiers.ll

@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc -global-isel -mtriple=amdgcn -mcpu=gfx1200 -verify-machineinstrs < %s | FileCheck %s --check-prefix=GFX12
+; RUN: llc -global-isel -mtriple=amdgcn -mcpu=gfx1200 -mattr=-real-true16 -verify-machineinstrs < %s | FileCheck %s --check-prefix=GFX12
 
 define amdgpu_ps void @test_wmma_f32_16x16x16_f16_negA(<8 x half> %A, <8 x half> %B, <8 x float> %C, ptr addrspace(1) %out) {
 ; GFX12-LABEL: test_wmma_f32_16x16x16_f16_negA:

llvm/test/CodeGen/AMDGPU/GlobalISel/wmma-gfx12-w64-f16-f32-matrix-modifiers.ll

@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc -global-isel -mtriple=amdgcn -mcpu=gfx1200 -mattr=+wavefrontsize64 -verify-machineinstrs < %s | FileCheck %s --check-prefix=GFX12
+; RUN: llc -global-isel -mtriple=amdgcn -mcpu=gfx1200 -mattr=+wavefrontsize64,-real-true16 -verify-machineinstrs < %s | FileCheck %s --check-prefix=GFX12
 
 define amdgpu_ps void @test_wmma_f32_16x16x16_f16_negA(<4 x half> %A, <4 x half> %B, <4 x float> %C, ptr addrspace(1) %out) {
 ; GFX12-LABEL: test_wmma_f32_16x16x16_f16_negA: