100 lines
2.9 KiB
LLVM
100 lines
2.9 KiB
LLVM
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; RUN: llc -verify-machineinstrs -mtriple=aarch64-linux-gnueabi < %s | FileCheck %s
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; RUN: llc -verify-machineinstrs -mtriple=aarch64-linux-gnueabi -cgp-verify-bfi-updates=true < %s | FileCheck %s
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; CHECK-LABEL: test1
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; CHECK: tbz {{w[0-9]}}, #3, {{.LBB0_3}}
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; CHECK: tbz w[[REG1:[0-9]+]], #2, {{.LBB0_3}}
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; CHECK-NOT: and [[REG2:x[0-9]+]], x[[REG1]], #0x4
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; CHECK-NOT: cbz [[REG2]], {{.LBB0_3}}
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; CHECK: b
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define void @test1(i64 %A, i64 %B) {
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entry:
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%and = and i64 %A, 4
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%notlhs = icmp eq i64 %and, 0
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%and.1 = and i64 %B, 8
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%0 = icmp eq i64 %and.1, 0
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%1 = or i1 %0, %notlhs
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br i1 %1, label %if.end3, label %if.then2
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if.then2: ; preds = %entry
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tail call void @foo(i64 %A, i64 %B)
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br label %if.end3
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if.end3: ; preds = %if.then2, %entry
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ret void
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}
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; CHECK-LABEL: test2
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; CHECK: cbz {{x[0-9]}}, {{.LBB1_3}}
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; CHECK: tbz w[[REG1:[0-9]+]], #3, {{.LBB1_3}}
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; CHECK-NOT: and [REG2:x[0-9]+], x[[REG1]], #0x08
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; CHECK-NOT: cbz [[REG2]], {{.LBB1_3}}
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define void @test2(i64 %A, i64* readonly %B) #0 {
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entry:
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%tobool = icmp eq i64* %B, null
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%and = and i64 %A, 8
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%tobool1 = icmp eq i64 %and, 0
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%or.cond = or i1 %tobool, %tobool1
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br i1 %or.cond, label %if.end3, label %if.then2
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if.then2: ; preds = %entry
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%0 = load i64, i64* %B, align 4
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tail call void @foo(i64 %A, i64 %0)
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br label %if.end3
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if.end3: ; preds = %entry, %if.then2
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ret void
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}
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; Make sure we use the W variant when log2(mask) is < 32.
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; CHECK-LABEL: test3
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; CHECK: tbz {{w[0-9]}}, #3, {{.LBB2_3}}
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; CHECK: tbz w[[REG1:[0-9]+]], #28, {{.LBB2_3}}
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; CHECK-NOT: and [[REG2:x[0-9]+]], x[[REG1]]
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; CHECK-NOT: cbz [[REG2]], {{.LBB2_3}}
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define void @test3(i64 %A, i64 %B) {
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entry:
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%shift = shl i64 1, 28
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%and = and i64 %A, %shift
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%notlhs = icmp eq i64 %and, 0
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%and.1 = and i64 %B, 8
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%0 = icmp eq i64 %and.1, 0
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%1 = or i1 %0, %notlhs
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br i1 %1, label %if.then2, label %if.end3
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if.then2: ; preds = %entry
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tail call void @foo(i64 %A, i64 %B)
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br label %if.end3
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if.end3: ; preds = %if.then2, %entry
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ret void
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}
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; CHECK-LABEL: test4
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; CHECK: tbz {{w[0-9]}}, #3, {{.LBB3_3}}
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; CHECK: tbz [[REG1:x[0-9]+]], #35, {{.LBB3_3}}
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; CHECK-NOT: and [[REG2:x[0-9]+]], x[[REG1]]
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; CHECK-NOT: cbz [[REG2]], {{.LBB2_3}}
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define void @test4(i64 %A, i64 %B) {
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entry:
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%shift = shl i64 1, 35
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%and = and i64 %A, %shift
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%notlhs = icmp eq i64 %and, 0
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%and.1 = and i64 %B, 8
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%0 = icmp eq i64 %and.1, 0
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%1 = or i1 %0, %notlhs
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br i1 %1, label %if.then2, label %if.end3
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if.then2: ; preds = %entry
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tail call void @foo(i64 %A, i64 %B)
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br label %if.end3
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if.end3: ; preds = %if.then2, %entry
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ret void
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}
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declare void @foo(i64, i64)
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