derek.holloway
7502bf64a4
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110 lines
2.1 KiB
LLVM
110 lines
2.1 KiB
LLVM
; RUN: llc -mtriple=thumbv7m-linux-gnu < %s | FileCheck %s --check-prefix=CHECK --check-prefix=T2
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; RUN: llc -mtriple=thumbv6m-linux-gnu < %s | FileCheck %s --check-prefix=CHECK --check-prefix=T1
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; CHECK-LABEL: single_bit:
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; CHECK: lsls r0, r0, #23
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; T2-NEXT: mov
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; T2-NEXT: it
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; T1-NEXT: bmi
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define i32 @single_bit(i32 %p) {
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%a = and i32 %p, 256
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%b = icmp eq i32 %a, 0
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br i1 %b, label %true, label %false
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true:
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ret i32 1
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false:
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ret i32 2
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}
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; CHECK-LABEL: single_bit_multi_use:
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; CHECK: lsls r0, r0, #23
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; T2-NEXT: mov
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; T2-NEXT: it
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; T1-NEXT: bmi
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define i32 @single_bit_multi_use(i32 %p, ptr %z) {
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store i32 %p, ptr %z
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%a = and i32 %p, 256
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%b = icmp eq i32 %a, 0
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br i1 %b, label %true, label %false
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true:
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ret i32 1
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false:
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ret i32 2
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}
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; CHECK-LABEL: multi_bit_lsb_ubfx:
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; CHECK: lsls r0, r0, #24
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; T2-NEXT: mov
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; T2-NEXT: it
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; T1-NEXT: beq
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define i32 @multi_bit_lsb_ubfx(i32 %p) {
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%a = and i32 %p, 255
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%b = icmp eq i32 %a, 0
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br i1 %b, label %true, label %false
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true:
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ret i32 1
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false:
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ret i32 2
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}
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; CHECK-LABEL: multi_bit_msb:
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; CHECK: lsrs r0, r0, #24
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; T2-NEXT: mov
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; T2-NEXT: it
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; T1-NEXT: beq
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define i32 @multi_bit_msb(i32 %p) {
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%a = and i32 %p, 4278190080 ; 0xff000000
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%b = icmp eq i32 %a, 0
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br i1 %b, label %true, label %false
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true:
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ret i32 1
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false:
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ret i32 2
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}
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; CHECK-LABEL: multi_bit_nosb:
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; T1: lsls r0, r0, #8
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; T1-NEXT: lsrs r0, r0, #24
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; T2: tst.w
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; T2-NEXT: it
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; T1-NEXT: beq
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define i32 @multi_bit_nosb(i32 %p) {
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%a = and i32 %p, 16711680 ; 0x00ff0000
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%b = icmp eq i32 %a, 0
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br i1 %b, label %true, label %false
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true:
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ret i32 1
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false:
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ret i32 2
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}
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; CHECK-LABEL: i16_cmpz:
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; T1: uxth r0, r0
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; T1-NEXT: lsrs r0, r0, #9
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; T1-NEXT: bne
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; T2: uxth r0, r0
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; T2-NEXT: movs r2, #0
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; T2-NEXT: cmp.w r2, r0, lsr #9
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define void @i16_cmpz(i16 %x, ptr %foo) {
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entry:
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%cmp = icmp ult i16 %x, 512
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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tail call void %foo(i32 0) #1
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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