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TheRock/compiler/amd-llvm/llvm/test/Transforms/IndVarSimplify/X86/eliminate-congruent-ivs.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=indvars -scalar-evolution-use-expensive-range-sharpening -S | FileCheck %s
target triple = "x86_64--linux-gnu"
; Provide legal integer types.
target datalayout = "n8:16:32:64"
declare void @foo(i64 %v)
declare void @bar(i32 %v)
define void @test1() {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[LOOP]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT: [[INDVARS2:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32
; CHECK-NEXT: call void @bar(i32 [[INDVARS2]])
; CHECK-NEXT: call void @foo(i64 [[INDVARS_IV]])
; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp eq i64 [[INDVARS_IV]], 1000
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop: ; preds = %loop, %entry
%iv = phi i32 [ %iv.next, %loop ], [ 0, %entry ]
%val1 = phi i32 [ %val1.inc, %loop ], [ 0, %entry ]
%val1.inc = add i32 %val1, 1
%iv.next = add i32 %iv, 1
call void @bar(i32 %val1.inc)
%iv.wide = zext i32 %iv to i64
call void @foo(i64 %iv.wide)
%loop.cond = icmp eq i32 %iv, 1000
br i1 %loop.cond, label %exit, label %loop
exit: ; preds = %loop
ret void
}
define void @test2() {
; CHECK-LABEL: @test2(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[VAL1:%.*]] = phi i64 [ [[VAL1_INC:%.*]], [[LOOP]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[VAL1_INC]] = add nuw nsw i64 [[VAL1]], 1
; CHECK-NEXT: call void @foo(i64 [[VAL1_INC]])
; CHECK-NEXT: call void @foo(i64 [[VAL1]])
; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp eq i64 [[VAL1]], 1000
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop: ; preds = %loop, %entry
%iv = phi i32 [ %iv.next, %loop ], [ 0, %entry ]
%val1 = phi i64 [ %val1.inc, %loop ], [ 0, %entry ]
%val1.inc = add i64 %val1, 1
%iv.next = add i32 %iv, 1
call void @foo(i64 %val1.inc)
%iv.wide = zext i32 %iv to i64
call void @foo(i64 %iv.wide)
%loop.cond = icmp eq i32 %iv, 1000
br i1 %loop.cond, label %exit, label %loop
exit: ; preds = %loop
ret void
}
define void @test3() {
; CHECK-LABEL: @test3(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[LOOP]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT: call void @foo(i64 [[INDVARS_IV]])
; CHECK-NEXT: call void @foo(i64 [[INDVARS_IV]])
; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp eq i64 [[INDVARS_IV]], 1000
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop: ; preds = %loop, %entry
%iv = phi i32 [ %iv.next, %loop ], [ 0, %entry ]
%val1 = phi i32 [ %val1.inc, %loop ], [ 0, %entry ]
%val1.inc = add i32 %val1, 1
%iv.next = add i32 %iv, 1
%val1.wide = zext i32 %val1 to i64
call void @foo(i64 %val1.wide)
%iv.wide = zext i32 %iv to i64
call void @foo(i64 %iv.wide)
%loop.cond = icmp eq i32 %iv, 1000
br i1 %loop.cond, label %exit, label %loop
exit: ; preds = %loop
ret void
}
define void @test4(ptr %ptr) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: entry:
; CHECK-NEXT: store i32 0, ptr [[PTR:%.*]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[LOOP]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT: [[INDVARS:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32
; CHECK-NEXT: store i32 [[INDVARS]], ptr [[PTR]], align 4
; CHECK-NEXT: call void @foo(i64 [[INDVARS_IV]])
; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp eq i64 [[INDVARS_IV]], 1000
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
store i32 0, ptr %ptr, align 4
br label %loop
loop: ; preds = %loop, %entry
%val = phi i32 [ %val.inc, %loop ], [ 0, %entry ]
%iv = phi i32 [ %iv.next, %loop ], [ 0, %entry ]
%val.inc = add i32 %val, 1
store i32 %val.inc, ptr %ptr, align 4
%iv.wide = zext i32 %iv to i64
call void @foo(i64 %iv.wide)
%iv.next = add i32 %iv, 1
%loop.cond = icmp eq i32 %iv, 1000
br i1 %loop.cond, label %exit, label %loop
exit: ; preds = %loop
ret void
}
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