49143f9d14
In the past, the SCEV expression of the sunk instruction was not forgetted. This led to the incorrect block dispositions after the instruction be sunk. Fixes https://github.com/llvm/llvm-project/issues/58662 Reviewed By: fhahn Differential Revision: https://reviews.llvm.org/D137060
127 lines
4.4 KiB
LLVM
127 lines
4.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=indvars -verify-scev < %s | FileCheck %s
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define void @test_pr54434() {
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; CHECK-LABEL: @test_pr54434(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_COND:%.*]]
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; CHECK: for.cond:
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; CHECK-NEXT: br i1 false, label [[FOR_COND92_PREHEADER:%.*]], label [[FOR_END106:%.*]]
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; CHECK: for.cond92.preheader:
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; CHECK-NEXT: br label [[FOR_COND92:%.*]]
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; CHECK: for.cond92:
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; CHECK-NEXT: br i1 false, label [[FOR_BODY94:%.*]], label [[FOR_END:%.*]]
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; CHECK: for.body94:
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; CHECK-NEXT: br label [[FOR_COND92]]
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; CHECK: for.end:
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; CHECK-NEXT: br label [[FOR_COND]]
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; CHECK: for.end106:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.cond
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for.cond: ; preds = %for.end, %entry
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%0 = phi i32 [ %inc105, %for.end ], [ 0, %entry ]
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%cmp = icmp sge i32 %0, 1
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br i1 %cmp, label %for.cond92, label %for.end106
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for.cond92: ; preds = %for.body94, %for.cond
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%1 = phi i16 [ %inc, %for.body94 ], [ 0, %for.cond ]
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%cmp93 = icmp slt i16 %1, 1
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br i1 %cmp93, label %for.body94, label %for.end
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for.body94: ; preds = %for.cond92
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%inc = add nsw i16 %1, 1
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br label %for.cond92
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for.end: ; preds = %for.cond92
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%inc105 = add nsw i32 %0, 1
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br label %for.cond
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for.end106: ; preds = %for.cond
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ret void
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}
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define i32 @test_pr58439(i32 %a) {
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; CHECK-LABEL: @test_pr58439(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: br i1 false, label [[LOOP]], label [[EXIT:%.*]]
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; CHECK: exit:
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; CHECK-NEXT: [[C_EXT_LCSSA:%.*]] = phi i32 [ 0, [[LOOP]] ]
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[A:%.*]], 1
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; CHECK-NEXT: [[RES:%.*]] = add i32 [[C_EXT_LCSSA]], [[OR]]
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; CHECK-NEXT: ret i32 [[RES]]
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;
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entry:
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%or = or i32 %a, 1
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br label %loop
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loop:
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%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop ]
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%iv.next = add i32 %iv, 1
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%c.1 = icmp eq i32 %iv.next, %or
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%c.ext = zext i1 %c.1 to i32
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br i1 false, label %loop, label %exit
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exit:
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%res = add i32 %c.ext, %or
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ret i32 %res
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}
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define i8 @l(i32 %inc, i1 %tobool.not.i) {
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; CHECK-LABEL: @l(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]
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; CHECK: outer.header:
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; CHECK-NEXT: br label [[INNER:%.*]]
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; CHECK: inner:
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; CHECK-NEXT: [[C_05_I:%.*]] = phi i32 [ [[INC_I:%.*]], [[INNER]] ], [ 0, [[OUTER_HEADER]] ]
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; CHECK-NEXT: [[INC_I]] = add nuw nsw i32 [[C_05_I]], 1
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; CHECK-NEXT: [[CMP_I:%.*]] = icmp ugt i32 [[C_05_I]], 0
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; CHECK-NEXT: [[OR_COND_I:%.*]] = select i1 [[CMP_I]], i1 true, i1 [[TOBOOL_NOT_I:%.*]]
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; CHECK-NEXT: br i1 [[OR_COND_I]], label [[OUTER_LATCH:%.*]], label [[INNER]]
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; CHECK: outer.latch:
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; CHECK-NEXT: [[C_05_I_LCSSA:%.*]] = phi i32 [ [[C_05_I]], [[INNER]] ]
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; CHECK-NEXT: [[LCSSA:%.*]] = phi i32 [ 0, [[INNER]] ]
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; CHECK-NEXT: [[AND:%.*]] = and i32 1, [[INC:%.*]]
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; CHECK-NEXT: [[TMP0:%.*]] = trunc i32 [[AND]] to i8
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[C_05_I_LCSSA]] to i8
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; CHECK-NEXT: [[TMP2:%.*]] = sub i8 [[TMP0]], [[TMP1]]
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; CHECK-NEXT: [[TOBOOL_NOT:%.*]] = icmp eq i8 [[TMP2]], 0
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; CHECK-NEXT: br i1 [[TOBOOL_NOT]], label [[OUTER_HEADER]], label [[IF_THEN:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: ret i8 0
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;
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entry:
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br label %outer.header
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outer.header: ; preds = %h.exit, %entry
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%outer.iv = phi i16 [ 0, %entry ], [ %outer.iv.next, %outer.latch ]
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%and = and i32 1, %inc
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%conv = sext i16 %outer.iv to i32
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br label %inner
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inner: ; preds = %while.body.i, %for.cond
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%c.05.i = phi i32 [ %inc.i, %inner ], [ 0, %outer.header ]
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%i.addr.04.i = phi i32 [ 0, %inner ], [ %conv, %outer.header ]
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%inc.i = add nsw i32 %c.05.i, 1
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%cmp.i = icmp sgt i32 %c.05.i, 0
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%or.cond.i = select i1 %cmp.i, i1 true, i1 %tobool.not.i
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br i1 %or.cond.i, label %outer.latch, label %inner
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outer.latch: ; preds = %while.body.i
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%lcssa = phi i32 [ 0, %inner ]
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%0 = trunc i32 %and to i8
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%1 = trunc i32 %c.05.i to i8
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%2 = sub i8 %0, %1
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%tobool.not = icmp eq i8 %2, 0
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%outer.iv.next = add i16 %outer.iv, 1
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br i1 %tobool.not, label %outer.header, label %if.then
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if.then: ; preds = %h.exit
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ret i8 0
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}
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