From c609648350fec51350d5768a330505d09e1a5a16 Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Fri, 3 Jul 2020 11:37:26 +0100
Subject: [PATCH] Regenerate mul-trunc tests, add vector variants and replace
 %tmp variable names to silence update_test_checks warnings

---
 .../InstCombine/2008-01-21-MulTrunc.ll        | 71 ++++++++++++++++---
 1 file changed, 61 insertions(+), 10 deletions(-)

diff --git a/test/Transforms/InstCombine/2008-01-21-MulTrunc.ll b/test/Transforms/InstCombine/2008-01-21-MulTrunc.ll
index 87c2b75d249..999b5d58f43 100644
--- a/test/Transforms/InstCombine/2008-01-21-MulTrunc.ll
+++ b/test/Transforms/InstCombine/2008-01-21-MulTrunc.ll
@@ -1,17 +1,68 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt < %s -instcombine -S | FileCheck %s
 
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
 
 define i16 @test1(i16 %a) {
-        %tmp = zext i16 %a to i32               ; <i32> [#uses=2]
-        %tmp21 = lshr i32 %tmp, 8               ; <i32> [#uses=1]
-; CHECK: %tmp21 = lshr i16 %a, 8
-        %tmp5 = mul i32 %tmp, 5         ; <i32> [#uses=1]
-; CHECK: %tmp5 = mul i16 %a, 5
-        %tmp.upgrd.32 = or i32 %tmp21, %tmp5            ; <i32> [#uses=1]
-; CHECK: %tmp.upgrd.32 = or i16 %tmp21, %tmp5
-        %tmp.upgrd.3 = trunc i32 %tmp.upgrd.32 to i16           ; <i16> [#uses=1]
-        ret i16 %tmp.upgrd.3
-; CHECK: ret i16 %tmp.upgrd.32
+; CHECK-LABEL: @test1(
+; CHECK-NEXT:    [[C:%.*]] = lshr i16 [[A:%.*]], 8
+; CHECK-NEXT:    [[D:%.*]] = mul i16 [[A]], 5
+; CHECK-NEXT:    [[E:%.*]] = or i16 [[C]], [[D]]
+; CHECK-NEXT:    ret i16 [[E]]
+;
+  %b = zext i16 %a to i32    ; <i32> [#uses=2]
+  %c = lshr i32 %b, 8        ; <i32> [#uses=1]
+  %d = mul i32 %b, 5         ; <i32> [#uses=1]
+  %e = or i32 %c, %d         ; <i32> [#uses=1]
+  %f = trunc i32 %e to i16   ; <i16> [#uses=1]
+  ret i16 %f
 }
 
+define <2 x i16> @test1_vec(<2 x i16> %a) {
+; CHECK-LABEL: @test1_vec(
+; CHECK-NEXT:    [[C:%.*]] = lshr <2 x i16> [[A:%.*]], <i16 8, i16 8>
+; CHECK-NEXT:    [[D:%.*]] = mul <2 x i16> [[A]], <i16 5, i16 5>
+; CHECK-NEXT:    [[E:%.*]] = or <2 x i16> [[C]], [[D]]
+; CHECK-NEXT:    ret <2 x i16> [[E]]
+;
+  %b = zext <2 x i16> %a to <2 x i32>
+  %c = lshr <2 x i32> %b, <i32 8, i32 8>
+  %d = mul <2 x i32> %b, <i32 5, i32 5>
+  %e = or <2 x i32> %c, %d
+  %f = trunc <2 x i32> %e to <2 x i16>
+  ret <2 x i16> %f
+}
+
+define <2 x i16> @test1_vec_nonuniform(<2 x i16> %a) {
+; CHECK-LABEL: @test1_vec_nonuniform(
+; CHECK-NEXT:    [[B:%.*]] = zext <2 x i16> [[A:%.*]] to <2 x i32>
+; CHECK-NEXT:    [[C:%.*]] = lshr <2 x i32> [[B]], <i32 8, i32 9>
+; CHECK-NEXT:    [[D:%.*]] = mul nuw nsw <2 x i32> [[B]], <i32 5, i32 6>
+; CHECK-NEXT:    [[E:%.*]] = or <2 x i32> [[C]], [[D]]
+; CHECK-NEXT:    [[F:%.*]] = trunc <2 x i32> [[E]] to <2 x i16>
+; CHECK-NEXT:    ret <2 x i16> [[F]]
+;
+  %b = zext <2 x i16> %a to <2 x i32>
+  %c = lshr <2 x i32> %b, <i32 8, i32 9>
+  %d = mul <2 x i32> %b, <i32 5, i32 6>
+  %e = or <2 x i32> %c, %d
+  %f = trunc <2 x i32> %e to <2 x i16>
+  ret <2 x i16> %f
+}
+
+define <2 x i16> @test1_vec_undef(<2 x i16> %a) {
+; CHECK-LABEL: @test1_vec_undef(
+; CHECK-NEXT:    [[B:%.*]] = zext <2 x i16> [[A:%.*]] to <2 x i32>
+; CHECK-NEXT:    [[C:%.*]] = lshr <2 x i32> [[B]], <i32 8, i32 undef>
+; CHECK-NEXT:    [[D:%.*]] = mul <2 x i32> [[B]], <i32 5, i32 undef>
+; CHECK-NEXT:    [[E:%.*]] = or <2 x i32> [[C]], [[D]]
+; CHECK-NEXT:    [[F:%.*]] = trunc <2 x i32> [[E]] to <2 x i16>
+; CHECK-NEXT:    ret <2 x i16> [[F]]
+;
+  %b = zext <2 x i16> %a to <2 x i32>
+  %c = lshr <2 x i32> %b, <i32 8, i32 undef>
+  %d = mul <2 x i32> %b, <i32 5, i32 undef>
+  %e = or <2 x i32> %c, %d
+  %f = trunc <2 x i32> %e to <2 x i16>
+  ret <2 x i16> %f
+}