160 lines
3.2 KiB
LLVM
160 lines
3.2 KiB
LLVM
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; RUN: llc < %s -mtriple=thumbv7m -mattr=-no-branch-predictor | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-BP
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; RUN: llc < %s -mtriple=thumbv7m -mcpu=cortex-m3 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NOBP
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declare void @otherfn()
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; CHECK-LABEL: triangle1:
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; CHECK: itt ne
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; CHECK: movne
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; CHECK: strne
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define i32 @triangle1(i32 %n, i32* %p) {
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entry:
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%tobool = icmp eq i32 %n, 0
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br i1 %tobool, label %if.end, label %if.then
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if.then:
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store i32 1, i32* %p, align 4
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br label %if.end
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if.end:
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tail call void @otherfn()
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ret i32 0
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}
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; CHECK-LABEL: triangle2:
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; CHECK-BP: itttt ne
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; CHECK-BP: movne
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; CHECK-BP: strne
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; CHECK-BP: movne
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; CHECK-BP: strne
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; CHECK-NOBP: cbz
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; CHECK-NOBP: movs
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; CHECK-NOBP: str
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; CHECK-NOBP: movs
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; CHECK-NOBP: str
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define i32 @triangle2(i32 %n, i32* %p, i32* %q) {
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entry:
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%tobool = icmp eq i32 %n, 0
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br i1 %tobool, label %if.end, label %if.then
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if.then:
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store i32 1, i32* %p, align 4
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store i32 2, i32* %q, align 4
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br label %if.end
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if.end:
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tail call void @otherfn()
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ret i32 0
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}
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; CHECK-LABEL: triangle3:
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; CHECK: cbz
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; CHECK: movs
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; CHECK: str
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; CHECK: movs
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; CHECK: str
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; CHECK: movs
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; CHECK: str
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define i32 @triangle3(i32 %n, i32* %p, i32* %q, i32* %r) {
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entry:
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%tobool = icmp eq i32 %n, 0
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br i1 %tobool, label %if.end, label %if.then
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if.then:
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store i32 1, i32* %p, align 4
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store i32 2, i32* %q, align 4
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store i32 3, i32* %r, align 4
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store i32 4, i32* %p, align 4
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br label %if.end
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if.end:
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tail call void @otherfn()
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ret i32 0
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}
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; CHECK-LABEL: diamond1:
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; CHECK: itee eq
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; CHECK: ldreq
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; CHECK: strne
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define i32 @diamond1(i32 %n, i32* %p) {
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entry:
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%tobool = icmp eq i32 %n, 0
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br i1 %tobool, label %if.else, label %if.then
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if.then:
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store i32 %n, i32* %p, align 4
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br label %if.end
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if.else:
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%0 = load i32, i32* %p, align 4
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br label %if.end
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if.end:
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%n.addr.0 = phi i32 [ %n, %if.then ], [ %0, %if.else ]
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tail call void @otherfn()
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ret i32 %n.addr.0
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}
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; CHECK-LABEL: diamond2:
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; CHECK-BP: cbz
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; CHECK-BP: str
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; CHECK-BP: str
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; CHECK-BP: b
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; CHECK-BP: str
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; CHECK-BP: add
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; CHECK-NOBP: ittee
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; CHECK-NOBP: streq
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; CHECK-NOBP: addeq
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; CHECK-NOBP: strne
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; CHECK-NOBP: strne
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define i32 @diamond2(i32 %n, i32* %p, i32* %q) {
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entry:
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%tobool = icmp eq i32 %n, 0
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br i1 %tobool, label %if.else, label %if.then
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if.then:
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store i32 %n, i32* %p, align 4
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%arrayidx = getelementptr inbounds i32, i32* %p, i32 2
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store i32 %n, i32* %arrayidx, align 4
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br label %if.end
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if.else:
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store i32 %n, i32* %q, align 4
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%0 = add i32 %n, 10
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br label %if.end
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if.end:
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%n.addr.0 = phi i32 [ %n, %if.then ], [ %0, %if.else ]
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tail call void @otherfn()
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ret i32 %n.addr.0
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}
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; CHECK-LABEL: diamond3:
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; CHECK: cbz
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; CHECK: movs
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; CHECK: str
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; CHECK: b
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; CHECK: ldr
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; CHECK: ldr
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; CHECK: adds
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define i32 @diamond3(i32 %n, i32* %p, i32* %q) {
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entry:
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%tobool = icmp eq i32 %n, 0
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br i1 %tobool, label %if.else, label %if.then
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if.then:
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store i32 1, i32* %p, align 4
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br label %if.end
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if.else:
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%0 = load i32, i32* %p, align 4
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%1 = load i32, i32* %q, align 4
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%add = add nsw i32 %1, %0
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br label %if.end
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if.end:
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%n.addr.0 = phi i32 [ %n, %if.then ], [ %add, %if.else ]
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tail call void @otherfn()
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ret i32 %n.addr.0
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}
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