73f087b331
Adds test case for X86 to check that the output of @llvm.expect.with.probability's generic lowering is reasonable. This replaces a generic test which only asserts that llc does not crash.
55 lines
1.5 KiB
LLVM
55 lines
1.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc < %s -O0 | FileCheck %s
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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-n8:16:32:64-S128"
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target triple = "i686-unknown-linux-gnu"
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@glbl = extern_weak constant i8
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declare i64 @llvm.expect.i64(i64, i64)
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declare i64 @llvm.expect.with.probability.i64(i64, i64, double)
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define void @test_expect() {
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; CHECK-LABEL: test_expect:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movl $glbl, %eax
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; CHECK-NEXT: testl %eax, %eax
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; CHECK-NEXT: jne .LBB0_2
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; CHECK-NEXT: jmp .LBB0_1
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; CHECK-NEXT: .LBB0_1: # %bb1
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; CHECK-NEXT: .LBB0_2: # %bb2
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%cmp2 = icmp eq ptr @glbl, null
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%ext = zext i1 %cmp2 to i64
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%tmp = call i64 @llvm.expect.i64(i64 %ext, i64 0)
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%tmp2 = icmp ne i64 %tmp, 0
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br i1 %tmp2, label %bb1, label %bb2
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bb1:
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unreachable
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bb2:
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unreachable
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}
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define void @test_expect_with_probability() {
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; CHECK-LABEL: test_expect_with_probability:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movl $glbl, %eax
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; CHECK-NEXT: testl %eax, %eax
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; CHECK-NEXT: jne .LBB1_2
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; CHECK-NEXT: jmp .LBB1_1
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; CHECK-NEXT: .LBB1_1: # %bb1
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; CHECK-NEXT: .LBB1_2: # %bb2
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%cmp2 = icmp eq ptr @glbl, null
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%ext = zext i1 %cmp2 to i64
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%tmp = call i64 @llvm.expect.with.probability.i64(i64 %ext, i64 0, double 0.5)
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%tmp2 = icmp ne i64 %tmp, 0
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br i1 %tmp2, label %bb1, label %bb2
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bb1:
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unreachable
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bb2:
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unreachable
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}
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