53 lines
2.1 KiB
LLVM
53 lines
2.1 KiB
LLVM
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs -o /dev/null 2>&1 %s | FileCheck -check-prefix=ERR %s
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; ERR: warning: inline asm clobber list contains reserved registers: v42
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; ERR: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.
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define amdgpu_kernel void @clobber_occupancy_limited_vgpr() #0 {
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entry:
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call void asm sideeffect "; clobber $0", "~{v42}"()
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ret void
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}
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; ERR: warning: inline asm clobber list contains reserved registers: v[42:43]
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; ERR: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.
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define amdgpu_kernel void @clobber_occupancy_limited_vgpr64() #0 {
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entry:
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call void asm sideeffect "; clobber $0", "~{v[42:43]}"()
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ret void
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}
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; ERR: warning: inline asm clobber list contains reserved registers: m0
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; ERR: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.
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define amdgpu_kernel void @clobber_m0() {
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entry:
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call void asm sideeffect "; clobber $0", "~{m0}"()
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ret void
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}
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; ERR: warning: inline asm clobber list contains reserved registers: exec
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; ERR: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.
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define amdgpu_kernel void @clobber_exec() {
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entry:
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call void asm sideeffect "; clobber $0", "~{exec}"()
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ret void
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}
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; ERR: warning: inline asm clobber list contains reserved registers: exec_lo
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; ERR: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.
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define amdgpu_kernel void @clobber_exec_lo() {
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entry:
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call void asm sideeffect "; clobber $0", "~{exec_lo}"()
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ret void
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}
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; FIXME: This should warn too
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; ERR-NOT: warning
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define amdgpu_kernel void @def_exec(i64 addrspace(1)* %ptr) {
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entry:
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%exec = call i64 asm sideeffect "; def $0", "={exec}"()
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store i64 %exec, i64 addrspace(1)* %ptr
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ret void
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}
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attributes #0 = { "amdgpu-waves-per-eu"="10,10" }
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