[test] Change llc -march= to -mtriple=

The issue is uncovered by #47698: for IR files without a target triple,
-mtriple= specifies the full target triple while -march= merely sets the
architecture part of the default target triple, leaving a target triple which
may not make sense, e.g. riscv64-apple-darwin.

Therefore, -march= is error-prone and not recommended for tests without a target
triple. The issue has been benign as we recognize $unknown-apple-darwin as ELF instead
of rejecting it outrightly.

Author: MaskRay

llvm/test/CodeGen/AMDGPU/GlobalISel/combine-short-clamp.ll

@@ -1,7 +1,7 @@
 ; RUN: llc -global-isel -mcpu=tahiti -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs < %s | FileCheck --check-prefixes=GCN,GFX678,GFX6789 %s
 ; RUN: llc -global-isel -mcpu=gfx900 -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs < %s | FileCheck --check-prefixes=GCN,GFX9,GFX6789 %s
-; RUN: llc -global-isel -mcpu=gfx1010 -march=amdgcn -verify-machineinstrs < %s | FileCheck --check-prefixes=GCN,GFX10 %s
-; RUN: llc -global-isel -mcpu=gfx1100 -march=amdgcn -verify-machineinstrs < %s | FileCheck --check-prefixes=GCN,GFX10 %s
+; RUN: llc -global-isel -mcpu=gfx1010 -mtriple=amdgcn -verify-machineinstrs < %s | FileCheck --check-prefixes=GCN,GFX10 %s
+; RUN: llc -global-isel -mcpu=gfx1100 -mtriple=amdgcn -verify-machineinstrs < %s | FileCheck --check-prefixes=GCN,GFX10 %s
 
 declare i64 @llvm.smax.i64(i64, i64)
 declare i64 @llvm.smin.i64(i64, i64)

llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-freeze.mir

@@ -1,8 +1,8 @@
 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=tahiti -run-pass=instruction-select %s -o - | FileCheck -check-prefix=GFX6 %s
 # RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=fiji -run-pass=instruction-select %s -o - | FileCheck -check-prefix=GFX6 %s
-# RUN: llc -march=amdgcn -mcpu=gfx1010 -run-pass=instruction-select %s -o - |  FileCheck -check-prefix=GFX10 %s
-# RUN: llc -march=amdgcn -mcpu=gfx1100 -run-pass=instruction-select %s -o - |  FileCheck -check-prefix=GFX10 %s
+# RUN: llc -mtriple=amdgcn -mcpu=gfx1010 -run-pass=instruction-select %s -o - |  FileCheck -check-prefix=GFX10 %s
+# RUN: llc -mtriple=amdgcn -mcpu=gfx1100 -run-pass=instruction-select %s -o - |  FileCheck -check-prefix=GFX10 %s
 
 ---
 name:            test_freeze_s1_vgpr_to_vgpr

llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.global.atomic.fadd-with-ret.ll

@@ -1,5 +1,5 @@
 ; RUN: llc -global-isel -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GFX90A %s
-; RUN: not --crash llc -global-isel < %s -march=amdgcn -mcpu=gfx908 -verify-machineinstrs 2>&1 | FileCheck %s -check-prefix=GFX908
+; RUN: not --crash llc -global-isel < %s -mtriple=amdgcn -mcpu=gfx908 -verify-machineinstrs 2>&1 | FileCheck %s -check-prefix=GFX908
 
 declare float @llvm.amdgcn.global.atomic.fadd.f32.p1.f32(ptr addrspace(1) nocapture, float)
 declare <2 x half> @llvm.amdgcn.global.atomic.fadd.f32.p1.v2f16(ptr addrspace(1) nocapture, <2 x half>)

llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.raw.buffer.atomic.fadd-with-ret.ll

@@ -1,5 +1,5 @@
 ; RUN: llc -global-isel -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GFX90A %s
-; RUN: not --crash llc -global-isel < %s -march=amdgcn -mcpu=gfx908 -verify-machineinstrs 2>&1 | FileCheck %s -check-prefix=GFX908
+; RUN: not --crash llc -global-isel < %s -mtriple=amdgcn -mcpu=gfx908 -verify-machineinstrs 2>&1 | FileCheck %s -check-prefix=GFX908
 
 declare float @llvm.amdgcn.raw.buffer.atomic.fadd.f32(float, <4 x i32>, i32, i32, i32 immarg)
 declare <2 x half> @llvm.amdgcn.raw.buffer.atomic.fadd.v2f16(<2 x half>, <4 x i32>, i32, i32, i32 immarg)

llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.raw.ptr.buffer.atomic.fadd-with-ret.ll

@@ -1,5 +1,5 @@
 ; RUN: llc -global-isel -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GFX90A %s
-; RUN: not --crash llc -global-isel < %s -march=amdgcn -mcpu=gfx908 -verify-machineinstrs 2>&1 | FileCheck %s -check-prefix=GFX908
+; RUN: not --crash llc -global-isel < %s -mtriple=amdgcn -mcpu=gfx908 -verify-machineinstrs 2>&1 | FileCheck %s -check-prefix=GFX908
 
 declare float @llvm.amdgcn.raw.ptr.buffer.atomic.fadd.f32(float, ptr addrspace(8), i32, i32, i32 immarg)
 declare <2 x half> @llvm.amdgcn.raw.ptr.buffer.atomic.fadd.v2f16(<2 x half>, ptr addrspace(8), i32, i32, i32 immarg)

llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.struct.buffer.atomic.fadd-with-ret.ll

@@ -1,5 +1,5 @@
 ; RUN: llc -global-isel -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GFX90A %s
-; RUN: not --crash llc -global-isel < %s -march=amdgcn -mcpu=gfx908 -verify-machineinstrs 2>&1 | FileCheck %s -check-prefix=GFX908
+; RUN: not --crash llc -global-isel < %s -mtriple=amdgcn -mcpu=gfx908 -verify-machineinstrs 2>&1 | FileCheck %s -check-prefix=GFX908
 
 ; GFX908: LLVM ERROR: cannot select: %{{[0-9]+}}:vgpr_32(s32) = G_AMDGPU_BUFFER_ATOMIC_FADD %{{[0-9]+}}:vgpr, %{{[0-9]+}}:sgpr(<4 x s32>), %{{[0-9]+}}:vgpr(s32), %{{[0-9]+}}:vgpr, %{{[0-9]+}}:sgpr, 0, 0, -1 :: (volatile dereferenceable load store (s32), align 1, addrspace 8) (in function: buffer_atomic_add_f32_rtn)
 

llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.struct.ptr.buffer.atomic.fadd-with-ret.ll

@@ -1,5 +1,5 @@
 ; RUN: llc -global-isel -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GFX90A %s
-; RUN: not --crash llc -global-isel < %s -march=amdgcn -mcpu=gfx908 -verify-machineinstrs 2>&1 | FileCheck %s -check-prefix=GFX908
+; RUN: not --crash llc -global-isel < %s -mtriple=amdgcn -mcpu=gfx908 -verify-machineinstrs 2>&1 | FileCheck %s -check-prefix=GFX908
 
 ; GFX908: LLVM ERROR: cannot select: %{{[0-9]+}}:vgpr_32(s32) = G_AMDGPU_BUFFER_ATOMIC_FADD %{{[0-9]+}}:vgpr, %{{[0-9]+}}:sgpr(<4 x s32>), %{{[0-9]+}}:vgpr(s32), %{{[0-9]+}}:vgpr, %{{[0-9]+}}:sgpr, 0, 0, -1 :: (volatile dereferenceable load store (s32) on %ir.rsrc.load, align 1, addrspace 8) (in function: buffer_atomic_add_f32_rtn)
 

llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.workitem.id.ll

@@ -4,8 +4,8 @@
 ; RUN: sed 's/CODE_OBJECT_VERSION/400/g' %s | llc -global-isel -mtriple=amdgcn-- -mcpu=tonga -mattr=+flat-for-global -verify-machineinstrs | FileCheck --check-prefixes=ALL,MESA,UNPACKED %s
 ; RUN: sed 's/CODE_OBJECT_VERSION/400/g' %s | llc -global-isel -mtriple=amdgcn-unknown-mesa3d -mattr=+flat-for-global -mcpu=hawaii -verify-machineinstrs | FileCheck -check-prefixes=ALL,CO-V2,UNPACKED %s
 ; RUN: sed 's/CODE_OBJECT_VERSION/400/g' %s | llc -global-isel -mtriple=amdgcn-unknown-mesa3d -mcpu=tonga -verify-machineinstrs | FileCheck -check-prefixes=ALL,CO-V2,UNPACKED %s
-; RUN: sed 's/CODE_OBJECT_VERSION/400/g' %s | llc -global-isel -march=amdgcn -mtriple=amdgcn-unknown-amdhsa -mcpu=gfx90a -verify-machineinstrs | FileCheck -check-prefixes=ALL,PACKED-TID %s
-; RUN: sed 's/CODE_OBJECT_VERSION/400/g' %s | llc -global-isel -march=amdgcn -mtriple=amdgcn-unknown-amdhsa -mcpu=gfx1100 -verify-machineinstrs -amdgpu-enable-vopd=0 | FileCheck -check-prefixes=ALL,PACKED-TID %s
+; RUN: sed 's/CODE_OBJECT_VERSION/400/g' %s | llc -global-isel -mtriple=amdgcn -mtriple=amdgcn-unknown-amdhsa -mcpu=gfx90a -verify-machineinstrs | FileCheck -check-prefixes=ALL,PACKED-TID %s
+; RUN: sed 's/CODE_OBJECT_VERSION/400/g' %s | llc -global-isel -mtriple=amdgcn -mtriple=amdgcn-unknown-amdhsa -mcpu=gfx1100 -verify-machineinstrs -amdgpu-enable-vopd=0 | FileCheck -check-prefixes=ALL,PACKED-TID %s
 
 declare i32 @llvm.amdgcn.workitem.id.x() #0
 declare i32 @llvm.amdgcn.workitem.id.y() #0

llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-freeze.mir

@@ -1,7 +1,7 @@
 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=tahiti -run-pass=amdgpu-regbankselect %s -o - | FileCheck %s
 # RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=fiji -run-pass=amdgpu-regbankselect %s -o - | FileCheck %s
-# RUN: llc -march=amdgcn -mcpu=gfx1010 -run-pass=amdgpu-regbankselect %s -o - | FileCheck %s
+# RUN: llc -mtriple=amdgcn -mcpu=gfx1010 -run-pass=amdgpu-regbankselect %s -o - | FileCheck %s
 
 ---
 name: test_freeze_s1_vgpr_to_vgpr

llvm/test/CodeGen/AMDGPU/addrspacecast.ll

@@ -1,5 +1,5 @@
-; RUN: llc -march=amdgcn -mtriple=amdgcn-amd-amdhsa -mcpu=kaveri -mattr=-promote-alloca -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=HSA -check-prefix=CI %s
-; RUN: llc -march=amdgcn -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -mattr=-promote-alloca -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=HSA -check-prefix=GFX9 %s
+; RUN: llc -mtriple=amdgcn -mtriple=amdgcn-amd-amdhsa -mcpu=kaveri -mattr=-promote-alloca -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=HSA -check-prefix=CI %s
+; RUN: llc -mtriple=amdgcn -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -mattr=-promote-alloca -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=HSA -check-prefix=GFX9 %s
 
 ; HSA-LABEL: {{^}}use_group_to_flat_addrspacecast:
 ; HSA: enable_sgpr_private_segment_buffer = 1