71 lines
2.8 KiB
LLVM
71 lines
2.8 KiB
LLVM
; RUN: llc -stop-after=amdgpu-isel -mtriple=amdgcn-- -mcpu=gfx1100 -verify-machineinstrs -o - %s | FileCheck --check-prefixes=CHECK,ISEL %s
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; RUN: not --crash llc -mtriple=amdgcn--amdhsa -mcpu=gfx1100 -verify-machineinstrs < %s 2>&1 | FileCheck --check-prefix=CHECK-ERROR %s
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; FIXME: Merge these tests with existing lane op tests (llvm.amdgcn.readlane.ll, llvm.amdgcn.writelane.ll ...) once the crash is fixed.
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; CHECK-LABEL: name: basic_readfirstlane_i64
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; CHECK: [[TOKEN:%[0-9]+]]{{[^ ]*}} = CONVERGENCECTRL_ANCHOR
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; ISEL: CONVERGENCECTRL_GLUE [[TOKEN]]
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; ISEL: {{.*}} = V_READFIRSTLANE_B32 {{.*}}, implicit [[TOKEN]]
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; ISEL: CONVERGENCECTRL_GLUE [[TOKEN]]
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; ISEL: {{.*}} = V_READFIRSTLANE_B32 {{.*}}, implicit [[TOKEN]]
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define i64 @basic_readfirstlane_i64(i64 %src, i1 %cond) #0 {
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entry:
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%t = call token @llvm.experimental.convergence.anchor()
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%x = add i64 %src, 1
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br i1 %cond, label %then, label %else
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then:
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; CHECK-ERROR: Cannot mix controlled and uncontrolled convergence in the same function.
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; CHECK-ERROR: V_READFIRSTLANE_B32
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%r = call i64 @llvm.amdgcn.readfirstlane.i64(i64 %x) [ "convergencectrl"(token %t) ]
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br label %else
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else:
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%p = phi i64 [%r, %then], [%x, %entry]
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ret i64 %p
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}
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; CHECK-LABEL: name: basic_readlane_i64
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; CHECK: [[TOKEN:%[0-9]+]]{{[^ ]*}} = CONVERGENCECTRL_ANCHOR
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; ISEL: CONVERGENCECTRL_GLUE [[TOKEN]]
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; ISEL: {{.*}} = V_READLANE_B32 {{.*}}, implicit [[TOKEN]]
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; ISEL: CONVERGENCECTRL_GLUE [[TOKEN]]
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; ISEL: {{.*}} = V_READLANE_B32 {{.*}}, implicit [[TOKEN]]
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define i64 @basic_readlane_i64(i64 %src, i32 %lane, i1 %cond) #0 {
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entry:
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%t = call token @llvm.experimental.convergence.anchor()
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%x = add i64 %src, 1
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br i1 %cond, label %then, label %else
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then:
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%r = call i64 @llvm.amdgcn.readlane.i64(i64 %x, i32 %lane) [ "convergencectrl"(token %t) ]
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br label %else
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else:
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%p = phi i64 [%r, %then], [%x, %entry]
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ret i64 %p
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}
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; CHECK-LABEL: name: basic_writelane_i64
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; CHECK: [[TOKEN:%[0-9]+]]{{[^ ]*}} = CONVERGENCECTRL_ANCHOR
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; ISEL: CONVERGENCECTRL_GLUE [[TOKEN]]
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; ISEL: {{.*}} = V_WRITELANE_B32 {{.*}}, implicit [[TOKEN]]
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; ISEL: CONVERGENCECTRL_GLUE [[TOKEN]]
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; ISEL: {{.*}} = V_WRITELANE_B32 {{.*}}, implicit [[TOKEN]]
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define i64 @basic_writelane_i64(i64 %src, i1 %cond, i32 %lane, ptr addrspace(1) %out) #0 {
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entry:
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%old = load i64, ptr addrspace(1) %out
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%t = call token @llvm.experimental.convergence.anchor()
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%x = add i64 %src, 1
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br i1 %cond, label %then, label %else
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then:
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%r = call i64 @llvm.amdgcn.writelane.i64(i64 %x, i32 %lane, i64 %old) [ "convergencectrl"(token %t) ]
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br label %else
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else:
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%p = phi i64 [%r, %then], [%x, %entry]
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ret i64 %p
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}
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