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llvm-mirror/test/CodeGen/PowerPC/pr36292.ll
Taewook Oh f53020f046 Reland "b19ec1eb3d0c [BPI] Improve unreachable/ColdCall heurstics to handle loops."
Summary: b19ec1eb3d0c has been reverted because of the test failures
with PowerPC targets. This patch addresses the issues from the previous
commit.

Test Plan: ninja check-all. Confirmed that CodeGen/PowerPC/pr36292.ll
and CodeGen/PowerPC/sms-cpy-1.ll pass

Subscribers: llvm-commits
2019-12-02 10:28:40 -08:00

53 lines
1.7 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-unknown < %s | \
; RUN: FileCheck %s --implicit-check-not=mtctr --implicit-check-not=bdnz
$test = comdat any
; No CTR loop due to frem (since it is always a call).
define void @test() nounwind comdat {
; CHECK-LABEL: test:
; CHECK: # %bb.0:
; CHECK-NEXT: mflr 0
; CHECK-NEXT: std 29, -24(1) # 8-byte Folded Spill
; CHECK-NEXT: std 30, -16(1) # 8-byte Folded Spill
; CHECK-NEXT: std 0, 16(1)
; CHECK-NEXT: stdu 1, -64(1)
; CHECK-NEXT: ld 29, 0(3)
; CHECK-NEXT: ld 30, 32(1)
; CHECK-NEXT: cmpld 30, 29
; CHECK-NEXT: bge 0, .LBB0_2
; CHECK-NEXT: .LBB0_1: # %bounds.ok
; CHECK-NEXT: #
; CHECK-NEXT: lfsx 2, 0, 3
; CHECK-NEXT: xxlxor 1, 1, 1
; CHECK-NEXT: bl fmodf
; CHECK-NEXT: nop
; CHECK-NEXT: addi 30, 30, 1
; CHECK-NEXT: stfsx 1, 0, 3
; CHECK-NEXT: cmpld 30, 29
; CHECK-NEXT: blt 0, .LBB0_1
; CHECK-NEXT: .LBB0_2: # %bounds.fail
; CHECK-NEXT: std 30, 32(1)
%pos = alloca i64, align 8
br label %forcond
forcond: ; preds = %bounds.ok, %0
%1 = load i64, i64* %pos
%.len1 = load i64, i64* undef
%bounds.cmp = icmp ult i64 %1, %.len1
br i1 %bounds.cmp, label %bounds.ok, label %bounds.fail
bounds.ok: ; preds = %forcond
%2 = load float, float* undef
%3 = frem float 0.000000e+00, %2
store float %3, float* undef
%4 = load i64, i64* %pos
%5 = add i64 %4, 1
store i64 %5, i64* %pos
br label %forcond
bounds.fail: ; preds = %forcond
unreachable
}