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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -passes=newgvn -S < %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-f128:128:128-n8:16:32:64"
; GVN shouldn't PRE the load around the loop backedge because it's
; not actually redundant around the loop backedge, despite appearances
; if phi-translation is ignored.
define void @test0(ptr %begin) {
; CHECK-LABEL: define void @test0(
; CHECK-SAME: ptr [[BEGIN:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[PHI:%.*]] = phi ptr [ [[BEGIN]], [[ENTRY:%.*]] ], [ [[NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L0:%.*]] = load i8, ptr [[PHI]], align 1
; CHECK-NEXT: call void @bar(i8 [[L0]])
; CHECK-NEXT: [[L1:%.*]] = load i8, ptr [[PHI]], align 1
; CHECK-NEXT: [[NEXT]] = getelementptr inbounds i8, ptr [[PHI]], i8 [[L1]]
; CHECK-NEXT: br label [[LOOP]]
;
entry:
br label %loop
loop:
%phi = phi ptr [ %begin, %entry ], [ %next, %loop ]
%l0 = load i8, ptr %phi
call void @bar(i8 %l0)
%l1 = load i8, ptr %phi
%next = getelementptr inbounds i8, ptr %phi, i8 %l1
br label %loop
}
declare void @bar(i8)
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