[PATCH] D52039: [PowerPC][NFC] Add a mulld testcase for scheduling check.
Jinsong Ji via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Sep 13 08:09:34 PDT 2018
jsji created this revision.
jsji added reviewers: hfinkel, nemanjai, stefanp.
This patch add a mulld testcase for scheduling check.
Currently https://reviews.llvm.org/P7/https://reviews.llvm.org/P8 which use itineraries are missing IIC_IntMulHD,
so they have different scheduling than https://reviews.llvm.org/P9.
We use CHECK-ITIN prefix to check https://reviews.llvm.org/P7/https://reviews.llvm.org/P8, then use default for https://reviews.llvm.org/P9 (and future).
We will fix the missing itineraries of IIC_IntMulHD in following patch, and update this testcase to show the difference.
Repository:
rL LLVM
https://reviews.llvm.org/D52039
Files:
llvm/test/CodeGen/PowerPC/mulld.ll
Index: llvm/test/CodeGen/PowerPC/mulld.ll
===================================================================
--- /dev/null
+++ llvm/test/CodeGen/PowerPC/mulld.ll
@@ -0,0 +1,53 @@
+; RUN: llc -verify-machineinstrs -mcpu=pwr9 -mtriple=powerpc64-unknown-linux-gnu < %s | FileCheck %s
+; RUN: llc -verify-machineinstrs -mcpu=pwr9 -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s
+; RUN: llc -verify-machineinstrs -mcpu=pwr8 -mtriple=powerpc64-unknown-linux-gnu < %s | FileCheck %s \
+; RUN: --check-prefix=CHECK-ITIN
+; RUN: llc -verify-machineinstrs -mcpu=pwr8 -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s \
+; RUN: --check-prefix=CHECK-ITIN
+; RUN: llc -verify-machineinstrs -mcpu=pwr7 -mtriple=powerpc64-unknown-linux-gnu < %s | FileCheck %s \
+; RUN: --check-prefix=CHECK-ITIN
+
+define void @bn_mul_comba8(i64* nocapture %r, i64* nocapture readonly %a, i64* nocapture readonly %b) {
+; CHECK-LABEL: bn_mul_comba8:
+; CHECK: mulhdu
+; CHECK-NEXT: mulld
+; CHECK-NEXT: mulhdu
+; CHECK-NEXT: mulld
+; CHECK-NEXT: mulhdu
+
+
+; CHECK-ITIN-LABEL: bn_mul_comba8:
+; CHECK-ITIN: mulhdu
+; CHECK-ITIN-NEXT: mulhdu
+; CHECK-ITIN-NEXT: mulld
+; CHECK-ITIN-NEXT: mulhdu
+; CHECK-ITIN-NEXT: mulld
+
+ %1 = load i64, i64* %a, align 8
+ %conv = zext i64 %1 to i128
+ %2 = load i64, i64* %b, align 8
+ %conv2 = zext i64 %2 to i128
+ %mul = mul nuw i128 %conv2, %conv
+ %shr = lshr i128 %mul, 64
+ %agep = getelementptr inbounds i64, i64* %a, i64 1
+ %3 = load i64, i64* %agep, align 8
+ %conv14 = zext i64 %3 to i128
+ %mul15 = mul nuw i128 %conv14, %conv
+ %add17 = add i128 %mul15, %shr
+ %shr19 = lshr i128 %add17, 64
+ %conv20 = trunc i128 %shr19 to i64
+ %bgep = getelementptr inbounds i64, i64* %b, i64 1
+ %4 = load i64, i64* %bgep, align 8
+ %conv28 = zext i64 %4 to i128
+ %mul31 = mul nuw i128 %conv28, %conv2
+ %conv32 = and i128 %add17, 18446744073709551615
+ %add33 = add i128 %conv32, %mul31
+ %shr35 = lshr i128 %add33, 64
+ %conv36 = trunc i128 %shr35 to i64
+ %add37 = add i64 %conv36, %conv20
+ %cmp38 = icmp ult i64 %add37, %conv36
+ %conv148 = zext i1 %cmp38 to i64
+ store i64 %conv148, i64* %r, align 8
+ ret void
+}
+
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