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TheRock/compiler/amd-llvm/llvm/test/Transforms/IndVarSimplify/casted-trunc.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

29 lines
954 B
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=indvars -S | FileCheck %s
declare void @foo(i16 noundef)
; Function Attrs: mustprogress noreturn uwtable
define void @bar(i64 noundef %ptr) {
; CHECK-LABEL: @bar(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = trunc i64 [[PTR:%.*]] to i4
; CHECK-NEXT: [[TMP1:%.*]] = zext i4 [[TMP0]] to i16
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
; CHECK: while.body:
; CHECK-NEXT: tail call void @foo(i16 noundef signext [[TMP1]])
; CHECK-NEXT: br label [[WHILE_BODY]]
;
entry:
br label %while.body
while.body: ; preds = %entry, %while.body
%0 = phi i64 [ %ptr, %entry ], [ %add.ptr, %while.body ]
%1 = trunc i64 %0 to i16
%and = and i16 %1, 15 ; loop invariant
tail call void @foo(i16 noundef signext %and)
%add.ptr = add nsw i64 %0, 16
br label %while.body
}