d494eb0fa3
When assigning numbers to registers, skip any with neither uses nor defs. This is will not have any impact at all on the final SASS but it makes for slightly more readable PTX. This change should also ensure that future minor changes are less likely to cause noisy diffs in register numbering.
66 lines
2.2 KiB
LLVM
66 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc < %s -O0 -march=nvptx64 -mcpu=sm_20 | FileCheck %s
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define [2 x i128] @foo(i64 %a, i32 %b) {
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; CHECK-LABEL: foo(
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; CHECK: {
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; CHECK-NEXT: .reg .b32 %r<2>;
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; CHECK-NEXT: .reg .b64 %rd<5>;
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; CHECK-EMPTY:
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; CHECK-NEXT: // %bb.0:
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; CHECK-NEXT: ld.param.b32 %r1, [foo_param_1];
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; CHECK-NEXT: ld.param.b64 %rd1, [foo_param_0];
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; CHECK-NEXT: shr.s64 %rd2, %rd1, 63;
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; CHECK-NEXT: cvt.s64.s32 %rd3, %r1;
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; CHECK-NEXT: shr.s64 %rd4, %rd3, 63;
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; CHECK-NEXT: st.param.v2.b64 [func_retval0], {%rd1, %rd2};
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; CHECK-NEXT: st.param.v2.b64 [func_retval0+16], {%rd3, %rd4};
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; CHECK-NEXT: ret;
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%1 = sext i64 %a to i128
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%2 = sext i32 %b to i128
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%3 = insertvalue [2 x i128] undef, i128 %1, 0
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%4 = insertvalue [2 x i128] %3, i128 %2, 1
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ret [2 x i128] %4
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}
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define [2 x i128] @foo2(ptr byval([2 x i128]) %a) {
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; CHECK-LABEL: foo2(
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; CHECK: {
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; CHECK-NEXT: .reg .b64 %rd<5>;
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; CHECK-EMPTY:
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; CHECK-NEXT: // %bb.0:
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; CHECK-NEXT: ld.param.v2.b64 {%rd1, %rd2}, [foo2_param_0];
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; CHECK-NEXT: ld.param.v2.b64 {%rd3, %rd4}, [foo2_param_0+16];
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; CHECK-NEXT: st.param.v2.b64 [func_retval0], {%rd1, %rd2};
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; CHECK-NEXT: st.param.v2.b64 [func_retval0+16], {%rd3, %rd4};
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; CHECK-NEXT: ret;
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%ptr0 = getelementptr [2 x i128], ptr %a, i64 0, i32 0
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%1 = load i128, i128* %ptr0
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%ptr1 = getelementptr [2 x i128], ptr %a, i64 0, i32 1
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%2 = load i128, i128* %ptr1
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%3 = insertvalue [2 x i128] undef, i128 %1, 0
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%4 = insertvalue [2 x i128] %3, i128 %2, 1
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ret [2 x i128] %4
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}
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define [2 x i128] @foo3([2 x i128] %a) {
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; CHECK-LABEL: foo3(
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; CHECK: {
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; CHECK-NEXT: .reg .b64 %rd<5>;
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; CHECK-EMPTY:
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; CHECK-NEXT: // %bb.0:
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; CHECK-NEXT: ld.param.v2.b64 {%rd3, %rd4}, [foo3_param_0+16];
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; CHECK-NEXT: ld.param.v2.b64 {%rd1, %rd2}, [foo3_param_0];
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; CHECK-NEXT: st.param.v2.b64 [func_retval0], {%rd1, %rd2};
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; CHECK-NEXT: st.param.v2.b64 [func_retval0+16], {%rd3, %rd4};
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; CHECK-NEXT: ret;
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%1 = extractvalue [2 x i128] %a, 0
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%2 = extractvalue [2 x i128] %a, 1
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%3 = insertvalue [2 x i128] undef, i128 %1, 0
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%4 = insertvalue [2 x i128] %3, i128 %2, 1
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ret [2 x i128] %4
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}
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