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1; RUN: opt -S -passes=instcombine < %s | FileCheck %s2 3target triple = "x86_64-apple-macosx10.6.6"4 5define zeroext i16 @foo1(i32 %on_off) {6; CHECK-LABEL: @foo1(7; CHECK-NEXT: [[ON_OFF_TR:%.*]] = trunc i32 %on_off to i168; CHECK-NEXT: [[TMP1:%.*]] = shl i16 [[ON_OFF_TR]], 19; CHECK-NEXT: [[CONV:%.*]] = add i16 [[TMP1]], -210; CHECK-NEXT: ret i16 [[CONV]]11;12 %on_off.addr = alloca i32, align 413 %a = alloca i32, align 414 store i32 %on_off, ptr %on_off.addr, align 415 %tmp = load i32, ptr %on_off.addr, align 416 %sub = sub i32 1, %tmp17 %mul = mul i32 %sub, -218 store i32 %mul, ptr %a, align 419 %tmp1 = load i32, ptr %a, align 420 %conv = trunc i32 %tmp1 to i1621 ret i16 %conv22}23 24define zeroext i16 @foo2(i32 %on_off, i32 %q) {25; CHECK-LABEL: @foo2(26; CHECK-NEXT: [[SUBA:%.*]] = sub i32 %on_off, %q27; CHECK-NEXT: [[SUBA_TR:%.*]] = trunc i32 [[SUBA]] to i1628; CHECK-NEXT: [[CONV:%.*]] = shl i16 [[SUBA_TR]], 229; CHECK-NEXT: ret i16 [[CONV]]30;31 %on_off.addr = alloca i32, align 432 %q.addr = alloca i32, align 433 %a = alloca i32, align 434 store i32 %on_off, ptr %on_off.addr, align 435 store i32 %q, ptr %q.addr, align 436 %tmp = load i32, ptr %q.addr, align 437 %tmp1 = load i32, ptr %on_off.addr, align 438 %sub = sub i32 %tmp, %tmp139 %mul = mul i32 %sub, -440 store i32 %mul, ptr %a, align 441 %tmp2 = load i32, ptr %a, align 442 %conv = trunc i32 %tmp2 to i1643 ret i16 %conv44}45 46define zeroext i16 @foo3(i32 %on_off) {47; CHECK-LABEL: @foo3(48; CHECK-NEXT: [[ON_OFF_TR:%.*]] = trunc i32 %on_off to i1649; CHECK-NEXT: [[TMP1:%.*]] = shl i16 [[ON_OFF_TR]], 250; CHECK-NEXT: [[CONV:%.*]] = add i16 [[TMP1]], -2851; CHECK-NEXT: ret i16 [[CONV]]52;53 %on_off.addr = alloca i32, align 454 %a = alloca i32, align 455 store i32 %on_off, ptr %on_off.addr, align 456 %tmp = load i32, ptr %on_off.addr, align 457 %sub = sub i32 7, %tmp58 %mul = mul i32 %sub, -459 store i32 %mul, ptr %a, align 460 %tmp1 = load i32, ptr %a, align 461 %conv = trunc i32 %tmp1 to i1662 ret i16 %conv63}64 65