[llvm] Remove br i1 undef from regression tests

llvm/test/Transforms/LoopInterchange/lcssa.ll

@@ -180,7 +180,7 @@ for.end16:                                        ; preds = %for.exit
 ; REMARK: Interchanged
 ; REMARK-NEXT: lcssa_05
 
-define void @lcssa_05(ptr %ptr) {
+define void @lcssa_05(ptr %ptr, i1 %arg) {
 entry:
   br label %outer.header
 
@@ -190,7 +190,7 @@ outer.header:                                     ; preds = %outer.inc, %entry
 
 for.body3:                                        ; preds = %bb3, %outer.header
   %iv.inner = phi i64 [ %iv.inner.next, %bb3 ], [ 1, %outer.header ]
-  br i1 undef, label %bb2, label %bb3
+  br i1 %arg, label %bb2, label %bb3
 
 bb2:                                              ; preds = %for.body3
   %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], ptr @A, i64 0, i64 %iv.inner, i64 %iv.outer
@@ -225,13 +225,13 @@ for.end16:                                        ; preds = %for.exit
 ; REMARK: UnsupportedExitPHI
 ; REMARK-NEXT: lcssa_06
 
-define void @lcssa_06(ptr %ptr, ptr %ptr1) {
+define void @lcssa_06(ptr %ptr, ptr %ptr1, i1 %arg) {
 entry:
   br label %outer.header
 
 outer.header:                                     ; preds = %outer.inc, %entry
   %iv.outer = phi i64 [ 1, %entry ], [ %iv.outer.next, %outer.inc ]
-  br i1 undef, label %for.body3, label %outer.inc
+  br i1 %arg, label %for.body3, label %outer.inc
 
 for.body3:                                        ; preds = %for.body3, %outer.header
   %iv.inner = phi i64 [ %iv.inner.next, %for.body3 ], [ 1, %outer.header ]
@@ -305,13 +305,13 @@ for.end16:                                        ; preds = %for.exit
 ; is an lcssa phi node outside the loopnest.
 ; REMARK: Interchanged
 ; REMARK-NEXT: lcssa_08
-define i64 @lcssa_08(ptr %Arr) {
+define i64 @lcssa_08(ptr %Arr, i1 %arg) {
 entry:
   br label %for1.header
 
 for1.header:                                         ; preds = %for1.inc, %entry
   %indvars.iv23 = phi i64 [ 0, %entry ], [ %indvars.iv.next24, %for1.inc ]
-  br i1 undef, label %for2, label %for1.inc
+  br i1 %arg, label %for2, label %for1.inc
 
 for2:                                        ; preds = %for2, %for1.header
   %indvars.iv = phi i64 [ 0, %for1.header ], [ %indvars.iv.next.3, %for2 ]

llvm/test/Transforms/LoopInterchange/pr43176-move-to-new-latch.ll

@@ -45,7 +45,7 @@ for.cond1.for.end_crit_edge:                      ; preds = %for.inc
 
 for.inc3:                                         ; preds = %for.cond1.for.end_crit_edge
   %inc4 = add nsw i32 %inc41, 1
-  br i1 undef, label %for.body, label %for.cond.for.end5_crit_edge
+  br i1 false, label %for.body, label %for.cond.for.end5_crit_edge
 
 for.cond.for.end5_crit_edge:                      ; preds = %for.inc3
   ret void
@@ -86,7 +86,7 @@ for.cond1.for.end_crit_edge:                      ; preds = %for.inc
 
 for.inc3:                                         ; preds = %for.cond1.for.end_crit_edge
   %inc4 = add nsw i32 %inc41, 1
-  br i1 undef, label %for.body, label %for.cond.for.end5_crit_edge
+  br i1 false, label %for.body, label %for.cond.for.end5_crit_edge
 
 for.cond.for.end5_crit_edge:                      ; preds = %for.inc3
   ret void

llvm/test/Transforms/LoopInterchange/pr43473-invalid-lcssa-phis-in-inner-exit.ll

@@ -6,7 +6,7 @@
 ; In the 2 test cases below, we have a LCSSA PHI in the inner loop exit, which
 ; is used in the outer loop latch. This is not supported.
 
-define void @test1() {
+define void @test1(i1 %arg) {
 ; CHECK-LABEL: @test1(
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    br label [[OUTER_HEADER:%.*]]
@@ -19,12 +19,12 @@ define void @test1() {
 ; CHECK-NEXT:    [[TMP0:%.*]] = load double, ptr [[IDX]], align 8
 ; CHECK-NEXT:    store double undef, ptr [[IDX]], align 8
 ; CHECK-NEXT:    [[INNER_IV_NEXT]] = add nuw nsw i64 [[INNER_IV]], 1
-; CHECK-NEXT:    br i1 false, label [[INNER]], label [[OUTER_LATCH]]
+; CHECK-NEXT:    br i1 [[ARG:%.*]], label [[INNER]], label [[OUTER_LATCH]]
 ; CHECK:       outer.latch:
 ; CHECK-NEXT:    [[INC43_LCSSA_WIDE_US:%.*]] = phi i64 [ [[INNER_IV_NEXT]], [[INNER]] ]
 ; CHECK-NEXT:    [[TMP1:%.*]] = trunc i64 [[INC43_LCSSA_WIDE_US]] to i32
 ; CHECK-NEXT:    [[OUTER_IV_NEXT]] = add nsw i64 [[OUTER_IV]], 1
-; CHECK-NEXT:    br i1 false, label [[OUTER_HEADER]], label [[OUTER_EXIT:%.*]]
+; CHECK-NEXT:    br i1 [[ARG]], label [[OUTER_HEADER]], label [[OUTER_EXIT:%.*]]
 ; CHECK:       outer.exit:
 ; CHECK-NEXT:    ret void
 ;
@@ -41,20 +41,20 @@ inner:                                    ; preds = %for.body28.us, %for.body25.
   %0 = load double, ptr %idx, align 8
   store double undef, ptr %idx, align 8
   %inner.iv.next = add nuw nsw i64 %inner.iv, 1
-  br i1 undef, label %inner, label %outer.latch
+  br i1 %arg, label %inner, label %outer.latch
 
 outer.latch:                ; preds = %inner
   %inc43.lcssa.wide.us = phi i64 [ %inner.iv.next, %inner ]
   %1 = trunc i64 %inc43.lcssa.wide.us to i32
   %outer.iv.next = add nsw i64 %outer.iv, 1
-  br i1 undef, label %outer.header, label %outer.exit
+  br i1 %arg, label %outer.header, label %outer.exit
 
 outer.exit:       ; preds = %for.cond26.for.end44_crit_edge.us
   ret void
 }
 
 ; Same as @test1, but with a dedicated inner loop exit block.
-define void @test2() {
+define void @test2(i1 %arg) {
 ; CHECK-LABEL: @test2(
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    br label [[OUTER_HEADER:%.*]]
@@ -67,14 +67,14 @@ define void @test2() {
 ; CHECK-NEXT:    [[TMP0:%.*]] = load double, ptr [[IDX]], align 8
 ; CHECK-NEXT:    store double undef, ptr [[IDX]], align 8
 ; CHECK-NEXT:    [[INNER_IV_NEXT]] = add nuw nsw i64 [[INNER_IV]], 1
-; CHECK-NEXT:    br i1 false, label [[INNER]], label [[INNER_EXIT:%.*]]
+; CHECK-NEXT:    br i1 [[ARG:%.*]], label [[INNER]], label [[INNER_EXIT:%.*]]
 ; CHECK:       inner.exit:
 ; CHECK-NEXT:    [[INC43_LCSSA_WIDE_US:%.*]] = phi i64 [ [[INNER_IV_NEXT]], [[INNER]] ]
 ; CHECK-NEXT:    br label [[OUTER_LATCH]]
 ; CHECK:       outer.latch:
 ; CHECK-NEXT:    [[TMP1:%.*]] = trunc i64 [[INC43_LCSSA_WIDE_US]] to i32
 ; CHECK-NEXT:    [[OUTER_IV_NEXT]] = add nsw i64 [[OUTER_IV]], 1
-; CHECK-NEXT:    br i1 false, label [[OUTER_HEADER]], label [[OUTER_EXIT:%.*]]
+; CHECK-NEXT:    br i1 [[ARG]], label [[OUTER_HEADER]], label [[OUTER_EXIT:%.*]]
 ; CHECK:       outer.exit:
 ; CHECK-NEXT:    ret void
 ;
@@ -91,7 +91,7 @@ inner:                                    ; preds = %for.body28.us, %for.body25.
   %0 = load double, ptr %idx, align 8
   store double undef, ptr %idx, align 8
   %inner.iv.next = add nuw nsw i64 %inner.iv, 1
-  br i1 undef, label %inner, label %inner.exit
+  br i1 %arg, label %inner, label %inner.exit
 
 inner.exit:
   %inc43.lcssa.wide.us = phi i64 [ %inner.iv.next, %inner ]
@@ -100,7 +100,7 @@ inner.exit:
 outer.latch:                ; preds = %inner
   %1 = trunc i64 %inc43.lcssa.wide.us to i32
   %outer.iv.next = add nsw i64 %outer.iv, 1
-  br i1 undef, label %outer.header, label %outer.exit
+  br i1 %arg, label %outer.header, label %outer.exit
 
 outer.exit:       ; preds = %for.cond26.for.end44_crit_edge.us
   ret void

llvm/test/Transforms/LoopInterchange/pr43797-lcssa-for-multiple-outer-loop-blocks.ll

@@ -59,15 +59,15 @@ inner.header:                                        ; preds = %for.inc, %for.bo
 
 inner.latch:                                          ; preds = %for.body6
   %inner.idx.inc = add nsw i64 %inner.idx, 1
-  br i1 undef, label %inner.header, label %inner.exit
+  br i1 false, label %inner.header, label %inner.exit
 
 inner.exit:                                          ; preds = %for.inc
   %outer.v = add nsw i64 %outer.idx, 1
   br label %outer.latch
 
 outer.latch:                                        ; preds = %for.end
   %outer.idx.inc = add nsw i64 %outer.idx, 1
-  br i1 undef, label %outer.header, label %outer.exit
+  br i1 false, label %outer.header, label %outer.exit
 
 outer.exit:                                        ; preds = %for.inc27
   %exit1.lcssa = phi i64 [ %outer.v, %outer.latch ]
@@ -133,15 +133,15 @@ inner.header:                                        ; preds = %for.inc, %for.bo
 
 inner.latch:                                          ; preds = %for.body6
   %inner.idx.inc = add nsw i64 %inner.idx , 1
-  br i1 undef, label %inner.header, label %inner.exit
+  br i1 false, label %inner.header, label %inner.exit
 
 inner.exit:                                          ; preds = %for.inc
   %outer.v = add nsw i64 %outer.idx, 1
   br label %outer.latch
 
 outer.latch:                                        ; preds = %for.end
   %outer.idx.inc = add nsw i64 %outer.idx, 1
-  br i1 undef, label %outer.header, label %outer.exit
+  br i1 false, label %outer.header, label %outer.exit
 
 outer.exit:                                        ; preds = %for.inc27
   %exit1.lcssa = phi i64 [ 0, %entry ], [ %outer.v, %outer.latch ]

llvm/test/Transforms/LoopInterchange/pr57148.ll

@@ -152,11 +152,11 @@ vector.body85:                                    ; preds = %vector.body85, %for
   %1 = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 %0, i16 %j.165
   %2 = load i32, ptr %1, align 1
   %index.next87 = add nuw i16 %index86, 4
-  br i1 undef, label %middle.block80, label %vector.body85
+  br i1 true, label %middle.block80, label %vector.body85
 
 middle.block80:                                   ; preds = %vector.body85
   %inc66 = add nuw nsw i16 %j.165, 1
-  br i1 undef, label %for.inc68, label %for.cond37.preheader
+  br i1 true, label %for.inc68, label %for.cond37.preheader
 
 for.inc68:                                        ; preds = %middle.block80
   %inc69 = add nuw nsw i16 %i.166, 1

llvm/test/Transforms/LoopLoadElim/pr-48150.ll

@@ -3,10 +3,10 @@
 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2"
 target triple = "x86_64-unknown-linux-gnu"
 
-define void @test() {
+define void @test(i1 %arg) {
 ; CHECK-LABEL: test
 bb:
-  br i1 undef, label %bb1, label %bb2
+  br i1 %arg, label %bb1, label %bb2
 
 bb1:                                              ; preds = %bb
   ret void

llvm/test/Transforms/LoopLoadElim/pr47457.ll

@@ -5,15 +5,15 @@ target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16
 target triple = "x86_64-unknown-linux-gnu"
 
 ; Make sure it does not crash with assert.
-define void @test() {
+define void @test(i1 %arg) {
 ; CHECK-LABEL: test
 
 bb:
   br label %bb1
 
 bb1:                                              ; preds = %bb6, %bb1, %bb
   %tmp = phi i32 [ undef, %bb ], [ 0, %bb1 ], [ %tmp3, %bb6 ]
-  br i1 undef, label %bb1, label %bb2
+  br i1 %arg, label %bb1, label %bb2
 
 bb2:                                              ; preds = %bb1
   %tmp3 = add i32 %tmp, 1
@@ -24,7 +24,7 @@ bb5:                                              ; preds = %bb2
   ret void
 
 bb6:                                              ; preds = %bb2
-  br i1 undef, label %bb7, label %bb1
+  br i1 %arg, label %bb7, label %bb1
 
 bb7:                                              ; preds = %bb7, %bb6
   %tmp8 = phi i32 [ %tmp15, %bb7 ], [ %tmp3, %bb6 ]

llvm/test/Transforms/LoopPredication/predicate-exits.ll

@@ -1117,7 +1117,7 @@ bb3:                                              ; preds = %bb
 
 bb4:                                              ; preds = %bb6, %bb3
   %tmp5 = phi i32 [ %tmp7, %bb6 ], [ 0, %bb3 ]
-  br i1 undef, label %bb10, label %bb6
+  br i1 true, label %bb10, label %bb6
 
 bb6:                                              ; preds = %bb4
   %tmp7 = add nuw nsw i32 %tmp5, 1

llvm/test/Transforms/LoopRotate/crash.ll

@@ -4,27 +4,27 @@ target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f3
 target triple = "x86_64-apple-darwin10.0.0"
 
 ; PR8955 - Rotating an outer loop that has a condbr for a latch block.
-define void @test1() nounwind ssp {
+define void @test1(i1 %arg) nounwind ssp {
 entry:
   br label %lbl_283
 
 lbl_283:                                          ; preds = %if.end, %entry
-  br i1 undef, label %if.else, label %if.then
+  br i1 %arg, label %if.else, label %if.then
 
 if.then:                                          ; preds = %lbl_283
-  br i1 undef, label %if.end, label %for.condthread-pre-split
+  br i1 %arg, label %if.end, label %for.condthread-pre-split
 
 for.condthread-pre-split:                         ; preds = %if.then
   br label %for.cond
 
 for.cond:                                         ; preds = %for.cond, %for.condthread-pre-split
-  br i1 undef, label %lbl_281, label %for.cond
+  br i1 %arg, label %lbl_281, label %for.cond
 
 lbl_281:                                          ; preds = %if.end, %for.cond
   br label %if.end
 
 if.end:                                           ; preds = %lbl_281, %if.then
-  br i1 undef, label %lbl_283, label %lbl_281
+  br i1 %arg, label %lbl_283, label %lbl_281
 
 if.else:                                          ; preds = %lbl_283
   ret void
@@ -140,12 +140,12 @@ bb17:		; preds = %bb15
 
 
 ; PR9523 - Non-canonical loop.
-define void @test7(ptr %P) nounwind {
+define void @test7(ptr %P, i1 %arg) nounwind {
 entry:
   indirectbr ptr %P, [label %"3", label %"5"]
 
 "3":                                              ; preds = %"4", %entry
-  br i1 undef, label %"5", label %"4"
+  br i1 %arg, label %"5", label %"4"
 
 "4":                                              ; preds = %"3"
   br label %"3"

llvm/test/Transforms/LoopRotate/multiple-exits.ll

@@ -199,12 +199,12 @@ declare ptr @__cxa_begin_catch(ptr)
 
 declare void @__cxa_end_catch()
 
-define void @test4() nounwind uwtable {
+define void @test4(i1 %arg) nounwind uwtable {
 entry:
   br label %"7"
 
 "3":                                              ; preds = %"7"
-  br i1 undef, label %"31", label %"4"
+  br i1 %arg, label %"31", label %"4"
 
 "4":                                              ; preds = %"3"
   %. = select i1 undef, float 0x3F50624DE0000000, float undef
@@ -217,7 +217,7 @@ entry:
   br i1 %2, label %"3", label %"8"
 
 "8":                                              ; preds = %"7"
-  br i1 undef, label %"9", label %"31"
+  br i1 %arg, label %"9", label %"31"
 
 "9":                                              ; preds = %"8"
   br label %"33"
@@ -226,7 +226,7 @@ entry:
   unreachable
 
 "31":                                             ; preds = %"8", %"3"
-  br i1 undef, label %"27", label %"32"
+  br i1 %arg, label %"27", label %"32"
 
 "32":                                             ; preds = %"31"
   br label %"33"

llvm/test/Transforms/LoopRotate/pr22337.ll

@@ -3,17 +3,17 @@
 @a = external global i8, align 4
 @tmp = global ptr @a
 
-define void @f() {
+define void @f(i1 %arg) {
 ; CHECK-LABEL: define void @f(
 ; CHECK: getelementptr i8, ptr @a, i32 1
 entry:
   br label %for.preheader
 
 for.preheader:
-  br i1 undef, label %if.then8, label %for.body
+  br i1 %arg, label %if.then8, label %for.body
 
 for.body:
-  br i1 undef, label %if.end, label %if.then8
+  br i1 %arg, label %if.end, label %if.then8
 
 if.end:
   %arrayidx = getelementptr i8, ptr @a, i32 1

llvm/test/Transforms/LoopRotate/pr33701.ll

@@ -1,6 +1,6 @@
 ; RUN: opt < %s -passes=loop-rotate -verify-dom-info -verify-loop-info -verify-memoryssa -disable-output
 
-define void @func() {
+define void @func(i1 %arg) {
 bb0:
   br label %bb1
 
@@ -10,7 +10,7 @@ bb1:                                              ; preds = %bb4, %bb0
   br i1 %1, label %bb2, label %bb5
 
 bb2:                                              ; preds = %bb1
-  br i1 undef, label %bb6, label %bb4
+  br i1 %arg, label %bb6, label %bb4
 
 bb3:                                              ; No predecessors!
   br label %bb6

llvm/test/Transforms/LoopRotate/pr37205.ll

@@ -95,7 +95,7 @@ if.then:                                          ; preds = %for.cond
   br label %for.cond1
 
 for.cond1:                                        ; preds = %for.cond4, %if.then
-  br i1 undef, label %for.body, label %for.end6
+  br i1 false, label %for.body, label %for.end6
 
 for.body:                                         ; preds = %for.cond1
   br i1 false, label %if.then3, label %if.end